Arithmetic sequence formula - Important terminology. Initial term: In an arithmetic progression, the first number in the series is called the "initial term." Common difference: The value by which consecutive terms increase or decrease is called the "common difference." Recursive Formula. We can describe an arithmetic sequence with a recursive formula, which specifies how each …

 
Actually the explicit formula for an arithmetic sequence is a(n)=a+(n-1)*D, and the recursive formula is a(n) = a(n-1) + D (instead of a(n)=a+D(n-1)). The difference is than an explicit formula gives the nth term of the sequence as a function of n alone, whereas a recursive formula gives the nth term of a sequence as a function of the previous ... . One way ticket

“If Africans fail to generate essential data and make such available we'll possibly suffer the same fate as with Rotavirus vaccine.” Pools of genome sequences of SARS-CoV-2 from al...The sequence formula to find n th term of an arithmetic sequence is, To find the 17 th term, we substitute n = 17 in the above formula. Answer: The 17 th term of the given sequence = -59. Example 2: Using a suitable sequence formula, find the sum of the sequence (1/5) + (1/15) + (1/45) + .... The arithmetic sequence formula is given by the formula for the nth term of an arithmetic sequence. The formula is below. a n = a + ( n - 1) d w here a n is the nth term, a is the first term, n is the position of the term, d is the common difference. This formula is the general formula used in finding the terms of an arithmetic sequence.Do 4 problems. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.The whole human proteome may be free to browse thanks to DeepMind, but at the bleeding edge of biotech new proteins are made and tested every day, a complex and time-consuming proc...Arithmetic Sequences – Examples with Answers. Arithmetic sequences exercises can be solved using the arithmetic sequence formula. This formula allows us to find any number in the sequence if we know the common difference, the first term, and the position of the number that we want to find. Here, we will look at a summary of arithmetic sequences.Jan 18, 2024 · a = a₁ + (n−1)d. where: a — The nᵗʰ term of the sequence; d — Common difference; and. a₁ — First term of the sequence. This arithmetic sequence formula applies in the case of all common differences, whether positive, negative, or equal to zero. Naturally, in the case of a zero difference, all terms are equal to each other, making ... Do 4 problems. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.221 likes, 7 comments - l0ve_math on February 25, 2024: "Solution coming soon... Follow for more videos @l0ve_math #math #mathmemes #derivative #calc..." We do not need to find the vertical intercept to write an explicit formula for an arithmetic sequence. Another explicit formula for this sequence is an = 200 − 50(n − 1) a n = 200 …All of that over 2. Now, we've come up with a general formula, just a function of what our first term is, what our common difference is, and how many terms we're adding up. And so this is the generalized sum of an arithmetic sequence, which we call an arithmetic series. But now, let's ask ourselves this question. This is hard to remember.The common difference of an arithmetic sequence is the difference between any of its terms and its previous term.An arithmetic sequence goes from one term to the next by always adding (or subtracting) the same amount. The number added (or subtracted) at each stage of an arithmetic sequence is called the "common difference", because if we …Actually the explicit formula for an arithmetic sequence is a(n)=a+(n-1)*D, and the recursive formula is a(n) = a(n-1) + D (instead of a(n)=a+D(n-1)). The difference is than an explicit formula gives the nth term of the sequence as a function of n alone, whereas a recursive formula gives the nth term of a sequence as a function of the previous ... If we have an arithmetic sequence with first term a1 and constant difference d, then the ith term of the arithmetic sequence is ai = a1 + d × (i − 1). Let’s examine the formula with this arithmetic sequence: {4, 7, 10, 13, 16, 19, 22, 25, ...}. In this sequence a1 = and d = 3. The table below shows the values calculated.1.2 Geometric sequences. A geometric sequence is a sequence of numbers in which each new term (except for the first term) is calculated by multiplying the previous term by a constant value called the constant ratio (\ (r\)). This means that the ratio between consecutive numbers in a geometric sequence is a constant (positive or negative).The arithmetic sequence formula is an invaluable tool in mathematics, offering a straightforward method to analyze and understand sequences with a constant difference. Its simplicity, coupled with its wide range of applications, makes it an essential concept for students and professionals alike.If a sequence is formed by adding (or subtracting) the same number each time to get the next term, it's called an arithmetic sequence. For example, the sequence 1, 4, 7, 10, 13 . . . is an arithmetic sequence because 3 is being added each time to get the next term. The sequence 100, 90, 80, 70 . . . is also arithmetic because 10 is being ...Determine the nth term of an arithmetic sequence. Determine the common difference of an arithmetic sequence. Determine the formula for an arithmetic sequence.Medicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine ARTICLE: Transcriptional profile of platelets and iPSC-derived megakaryocytes from...Exercise 9.3.2. List the first five terms of the arithmetic sequence with a1 = 1 and d = 5. Answer. How to: Given any the first term and any other term in an arithmetic sequence, find a given term. Substitute the values given for a1, an, n into the formula an = a1 + (n − 1)d to solve for d.Here is a recursive formula of the sequence 3, 5, 7, … along with the interpretation for each part. { a ( 1) = 3 ← the first term is 3 a ( n) = a ( n − 1) + 2 ← add 2 to the previous term. In the formula, n is any term number and a ( n) is the n th term. This means a ( 1) is the first term, and a ( n − 1) is the term before the n th term. A recursive formula allows us to find any term of an arithmetic sequence using a function of the preceding term. Each term is the sum of the previous term and the common difference. For example, if the common difference is 5, then each term is the previous term plus 5. Sum of the arithmetic sequence. The formula for calculating the sum of all the terms in an arithmetic sequence is defined as the sum of the arithmetic sequence formula. If an arithmetic sequence is written as in the form of addition of its terms such as, a + (a+d) + (a+2d) + (a+3d) + ….., then it is known as arithmetic series.The k th partial sum of an arithmetic series is. You simply plug the lower and upper limits into the formula for an to find a1 and ak. Arithmetic sequences are very helpful to identify because the formula for the n th term of an arithmetic sequence is always the same: an = a1 + ( n – 1) d. where a1 is the first term and d is the common ...Hence, the average of all the numbers in the arithmetic sequence will become (2A1+ (N-1)*D)/2. Subsequently, the sum of N terms of the arithmetic sequence will become N* ( (2A1+ (N-1)*D)/2). We can calculate the sum of N terms in the arithmetic equation using this formula in python as follows. commonDifference = 2 print ("Common …We are given the following explicit formula of an arithmetic sequence. d ( n ) = 5 + 16 ( n − 1 ) ‍ This formula is given in the standard explicit form A + B ( n − 1 ) ‍ where A ‍ is the first term and that B ‍ is the common difference. Arithmetic Sequences. An arithmetic sequence is a sequence of numbers which increases or decreases by a constant amount each term. We can write a formula for the nth n th term of an arithmetic sequence in the form. an = dn + c a n = d n + c , where d d is the common difference . Once you know the common difference, you can find the value of c c ...Arithmetic Progression (also called arithmetic sequence), is a sequence of numbers such that the difference between any two consecutive terms is constant. Each term therefore in an arithmetic progression will increase or decrease at a constant value called the common difference, d. d =a2 −a1 = a3 −a2 = a4 −a3 d = a 2 − a 1 = a 3 − a 2 ...Formulas of Arithmetic Sequence. Mathematically, if a1, a2, a3 … are the terms of an arithmetic sequence, then, Formula 1: an+1 = an + d. where, n = set of natural numbers. d = common difference. General expression of arithmetic sequence = a, a + d, a + 2d, a + 3d … The general term, i.e., nth term in an arithmetic sequence is given by:Nov 21, 2023 · An arithmetic sequence is solved by the first check the given sequence is arithmetic or not. Then calculate the common difference by using the formula d=a2- a1=a3-a2=…=an-a (n-1). Finally, solve ... Arithmetic sequence formula. The arithmetic sequence formula is: Where, a_{n} is the nth term (general term) a_{1} is the first term . n is the term position. d is the common difference. We get the arithmetic sequence formula by looking at the following example: We can see the common difference (d) is 6 , so d = 6 . a_{1} is the first term ... Mathematically, S = n/2 * (a₁ + a) If you substitute the value of arithmetic sequence of the nth term, we obtain S = n/2 * [2a₁ + (n-1)d] after simplification. By using this formula, we can easily find the summation of arithmetic sequences. For practical understanding of the concept, go with our Arithmetic Sequence Calculator and provide ...The first formula is given by, S n = n 2 2 a + ( n - 1) d. where S n is the sum of the arithmetic sequence, n is the number of terms in the sequence, a is the first term, d is the common difference. This formula is used when the last term of the sequence is not known. The other formula is given by, S n = n 2 a + a n.Definition 1: A mathematical sequence in which the difference between two consecutive terms is always a constant and it is abbreviated as AP. Definition 2: An arithmetic sequence or progression is defined as a sequence of numbers in which for every pair of consecutive terms, the second number is obtained by adding a fixed number to the first one. The arithmetic sequence formula is given by the formula for the nth term of an arithmetic sequence. The formula is below. a n = a + ( n - 1) d w here a n is the nth term, a is the first term, n is the position of the term, d is the common difference. This formula is the general formula used in finding the terms of an arithmetic sequence.Arithmetic Sequences and Sums worksheets, questions and revision for GCSE Maths. All the revision you need in one place. Revise. ... Question 2: A sequence is defined by the formula 1080 + (n-1)(-40) a) Work out the first 5 terms of this sequence. [2 marks] b) Determine whether or not -140 is in the sequence.Jan 24, 2024 · Arithmetic Sequence and Series. An arithmetic sequence is a sequence where each term of the sequence is formed either by adding or subtracting a common term from the preceding number, and the common term is called the common difference. An arithmetic series is referred to as a series developed by using an arithmetic sequence. For example, Arithmetic sequence: A sequence in which every successive term differs from the previous one is constant, is called Arithmetic Sequence. E.g. Suppose in a sequence a1, a2, a3, …., an are the terms & difference between each term is ‘d’, then the formula is given by an = a1 + (n−1)dArithmetic sequence: A sequence in which every successive term differs from the previous one is constant, is called Arithmetic Sequence. E.g. Suppose in a sequence a1, a2, a3, …., an are the terms & difference between each term is ‘d’, then the formula is given by an = a1 + (n−1)dThe figure below shows all sequences and series formulas. Let us see each of these formulas in detail and understand what each variable represents. Arithmetic Sequence and Series Formulas. Consider the arithmetic sequence a, a+d, a+2d, a+3d, a+4d, ...., where 'a' is its first term and 'd' is its common difference. Then:Microsoft Excel is spreadsheet software used for calculations ranging from simple arithmetic to complex statistical and engineering formulas. One of Excel's major features is the a...Hence, the average of all the numbers in the arithmetic sequence will become (2A1+ (N-1)*D)/2. Subsequently, the sum of N terms of the arithmetic sequence will become N* ( (2A1+ (N-1)*D)/2). We can calculate the sum of N terms in the arithmetic equation using this formula in python as follows. commonDifference = 2 print ("Common …Examples of How to Apply the Concept of Arithmetic Sequence. Example 1: Find the next term in the sequence below. First, find the common difference of each pair of consecutive numbers. Since the common difference is [latex]8 [/latex] or written as [latex]d=8 [/latex], we can find the next term after [latex]31 [/latex] by adding [latex]8 [/latex ... See full list on cuemath.com Step 2: Next, I determine the common difference, d, by subtracting any term from the subsequent term. In my case, subtracting the second term, 4, from the third term, 6, gives me a common difference, d, of 2. This difference is constant between any two consecutive terms. Step 3: To find the nth term, or a n, I apply the arithmetic sequence …Determine the nth term of an arithmetic sequence. Determine the common difference of an arithmetic sequence. Determine the formula for an arithmetic sequence.An arithmetic sequence is a sequence where the difference d between successive terms is constant. The general term of an arithmetic sequence can be written in terms of its first term a1 a 1, common difference d, and index n as follows: an =a1 +(n − 1) d. a n = a 1 + ( n − 1) d. An arithmetic series is the sum of the terms of an arithmetic ...Whole genome sequencing is a powerful weapon for combating antibiotic resistance. The US government has upgraded its network of public health laboratories with new technology, allo...Learn how to transform a given arithmetic sequence into an arithmetic series by adding the terms of the sequence. Use the arithmetic series formula to find the sum of the first, partial sum, or last term of an arithmetic …The fundamental insight that originally led to the creation of this formula probably started with the observation that the sum of the first term and last term in an arithmetic series is always the same as the sum of the 2nd and 2nd-to-last, 3rd and 3rd-to-last, etc. Try it in your head with a simple series, such as whole numbers from 1 to 10 ... In an arithmetic sequence, the difference between consecutive terms in the sequence is constant. That constant difference is known as the common difference of the sequence. You need to know the nth term formula for an arithmetic sequence. a is the first term. d is the common difference. Find the General Term (nth Term) of an Arithmetic Sequence. Just as we found a formula for the general term of a sequence, we can also find a formula for the general term of an arithmetic sequence. Let’s write the first few terms of a sequence where the first term is a 1 a 1 and the common difference is d. We will then look for a pattern.Step 1: Enter the terms of the sequence below. The Sequence Calculator finds the equation of the sequence and also allows you to view the next terms in the sequence. Arithmetic …Arithmetic sequence formula is used to calculate the n th term of an arithmetic sequence. To recall, a sequence is an ordered list of numbers. The sum of the terms of a sequence …The pattern rule to get any term from the term that comes before it. Here is a recursive formula of the sequence 3, 5, 7, … along with the interpretation for each part. { a ( 1) = 3 ← the first term is 3 a ( n) = a ( n − 1) + 2 ← add 2 to the previous term. In the formula, n is any term number and a ( n) is the n th term.The common difference of an arithmetic sequence is the difference between any of its terms and its previous term.An arithmetic sequence goes from one term to the next by always adding (or subtracting) the same amount. The number added (or subtracted) at each stage of an arithmetic sequence is called the "common difference", because if we …An arithmetic sequence is a series of numbers that are added to each other to form a sequence. For example, 2, 4, 6, 8, and 10 is an arithmetic sequence because each number is the sum of the preceding two numbers. 5. What is the formula for an arithmetic sequence? The formula for an arithmetic sequence is: a + d = first term. d …Learn how to find the nth term, the sum and the common difference of an arithmetic sequence with two formulas. See examples of arithmetic sequences and how to use them in applications. Explore the difference …The nth n t h term rule for the sequence is thus: an = 3n − 1 a n = 3 n − 1. Finally, let's find the common difference, first term and nth n t h term rule for the arithmetic sequence in which a10 = −50 a 10 = − 50 and a32 = −182 a 32 = − 182. This time we will use the concept that the terms in an arithmetic sequence are actually ...Formulas. We have two arithmetic sequence formulas. The following formula may be used to determine the nth term in an arithmetic sequence: an = a1 +(n-1)d. or, an = an-1 +d. Where ‘d’ is the common difference d= an – an-1. The formula for calculating the sum of an arithmetic sequence's first n terms. Sn = (n/2) [2a + (n - 1)d] If we want ...So, in the output Cell B4 in the following picture, the required formula will be: =EDATE (DATE (2021,1,1),SEQUENCE (12,1,0)) iii. Making a List of 12-Month Names with SEQUENCE Function in Excel. By using the TEXT function around the SEQUENCE function, we can also prepare a list of successive twelve months in a year.A geometric sequence is a sequence of terms (or numbers) where all ratios of every two consecutive terms give the same value (which is called the common ratio). Considering a geometric sequence whose first term is 'a' and whose common ratio is 'r', the geometric sequence formulas are: The n th term of geometric sequence = a r n-1.1.4. Compound interest. kn. FV = PV × 1 + r , where FV is the future value, 100 k PV is the present value, n is the number of years, k is the number of compounding periods per year, r% is the nominal annual rate of interest. SL. 1.5. Exponents and logarithms. x = b ⇔ x = log.The arithmetic sequence formula is given by the formula for the nth term of an arithmetic sequence. The formula is below. a n = a + ( n - 1) d w here a n is the nth term, a is the first term, n is the position of the term, d is the common difference. This formula is the general formula used in finding the terms of an arithmetic sequence.Learn how to identify, calculate, and sum the terms of an arithmetic sequence using the formula a n = a 1 + ( n − 1) d, where a 1 is the first term and d is the common …To sum up the terms of this arithmetic sequence: a + (a+d) + (a+2d) + (a+3d) + ... use this formula: What is that funny symbol? It is called Sigma Notation. Σ (called Sigma) means "sum up". And below and above it are shown the starting and ending values: It says "Sum up n where n goes from 1 to 4. Answer= 10. The nth n t h term rule for the sequence is thus: an = 3n − 1 a n = 3 n − 1. Finally, let's find the common difference, first term and nth n t h term rule for the arithmetic sequence in which a10 = −50 a 10 = − 50 and a32 = −182 a 32 = − 182. This time we will use the concept that the terms in an arithmetic sequence are actually ...Arithmetic sequence: A sequence in which every successive term differs from the previous one is constant, is called Arithmetic Sequence. E.g. Suppose in a sequence a1, a2, a3, …., an are the terms & difference between each term is ‘d’, then the formula is given by an = a1 + (n−1)dSubtract the number in the 5 times table from the number in the sequence. This gives a constant difference of +2. For example, 7 – 5 = 2, 12 -10 = 2, and 17 – 15 = 2. The general rule for the ...Sequence formula mainly refers to either geometric sequence formula or arithmetic sequence formula. To recall, all sequences are an ordered list of numbers. Example 1,4,7,10…. all of these are in a proper sequence. That is each subsequent number is increasing by 3.May 8, 2017 ... Set up and solve a system of equations using the definition of the arithmetic sequence. Answer: a_n=-4+5(n-1) We know that from the general ...Formulas of Arithmetic Sequence. Mathematically, if a1, a2, a3 … are the terms of an arithmetic sequence, then, Formula 1: an+1 = an + d. where, n = set of natural numbers. d = common difference. General expression of arithmetic sequence = a, a + d, a + 2d, a + 3d … The general term, i.e., nth term in an arithmetic sequence is given by:Aug 24, 2020 · Definition 14.3.1. An arithmetic sequence is a sequence where the difference between consecutive terms is always the same. The difference between consecutive terms, a_ {n}-a_ {n-1}, is d, the common difference, for n greater than or equal to two. Figure 12.2.1. If we have an arithmetic sequence with first term a1 and constant difference d, then the ith term of the arithmetic sequence is ai = a1 + d × (i − 1). Let’s examine the formula with this arithmetic sequence: {4, 7, 10, 13, 16, 19, 22, 25, ...}. In this sequence a1 = and d = 3. The table below shows the values calculated.In an arithmetic sequence, the difference between consecutive terms is constant, such as in the series (5, 11, 17, 23), where each number increases by 6. Contrarily, a geometric sequence is defined by a constant ratio between successive terms—for example, ($2, 4, 8, 16), where each term is the previous one multiplied by 2.︎ The Partial Sum Formula can be described in words as the product of the average of the first and the last terms and the total number of terms in the sum. ︎ The Arithmetic Sequence Formula is incorporated/embedded in the Partial Sum Formula. It is in fact the nth term or the last term [latex]\large\color{blue}{a_n}[/latex] in the formula. The arithmetic sequence formula is given by the formula for the nth term of an arithmetic sequence. The formula is below. a n = a + ( n - 1) d w here a n is the nth term, a is the first term, n is the position of the term, d is the common difference. This formula is the general formula used in finding the terms of an arithmetic sequence.The straight-line depreciation formula is to divide the depreciable cost of the asset by the asset’s useful life. Accounting | How To Download our FREE Guide Your Privacy is import...All of that over 2. Now, we've come up with a general formula, just a function of what our first term is, what our common difference is, and how many terms we're adding up. And so this is the generalized sum of an arithmetic sequence, which we call an arithmetic series. But now, let's ask ourselves this question. This is hard to remember.Formulas. We have two arithmetic sequence formulas. The following formula may be used to determine the nth term in an arithmetic sequence: an = a1 +(n-1)d. or, an = an-1 +d. Where ‘d’ is the common difference d= an – an-1. The formula for calculating the sum of an arithmetic sequence's first n terms. Sn = (n/2) [2a + (n - 1)d] If we want ...Just use Order of Operations, and you will get the right answer for every term. So for n=4, first use the equation f (n) = 12 - 7 (n - 1), plug in 4 for n. Then, in the parenthesis, you will have 4-1, which is 3. Then, multiply 7*3 = 21. Lastly, subtract 12 from 21, to get -9, which is the correct answer. When using arithmetic sequence formula.For example, the sequence 3, 6, 9, 12, 15, 18, 21, 24… is an arithmetic progression having a common difference of 3. The formulas applied by this arithmetic sequence calculator can be written as explained below while the following conventions are made: - the initial term of the arithmetic progression is marked with a 1; - the step/common ...The sequence formula to find n th term of an arithmetic sequence is, To find the 17 th term, we substitute n = 17 in the above formula. Answer: The 17 th term of the given sequence = -59. Example 2: Using a suitable sequence formula, find the sum of the sequence (1/5) + (1/15) + (1/45) + .... The straight-line depreciation formula is to divide the depreciable cost of the asset by the asset’s useful life. Accounting | How To Download our FREE Guide Your Privacy is import...Arithmetic sequence formulas give a ( n) , the n th term of the sequence. This is the explicit formula for the arithmetic sequence whose first term is k and common difference is d : a ( n) = k + ( n − 1) d. This is the recursive formula of that sequence: How To: Given the first several terms for an arithmetic sequence, write an explicit formula. · Find the common difference,. a 2 − a 1 {a}_{2}-{a}_{1} a2​−a1​.

An arithmetic progression or arithmetic sequence ( AP) is a sequence of numbers such that the difference from any succeeding term to its preceding term remains constant throughout the sequence. The constant difference is called common difference of that arithmetic progression. For instance, the sequence 5, 7, 9, 11, 13, 15, . . . is an ... . Vicegerents

arithmetic sequence formula

If you want the 2nd term, then n=2; for 3rd term n=3; etc. The recursive equation for an arithmetic squence is: f (1) = the value for the 1st term. f (n) = f (n-1) + common difference. For example: if 1st term = 5 and common difference is 3, your equation becomes: f (1) = 5. f (n) = f (n-1)+3. Hope this helps. Analysis. The graph of each of these sequences is shown in Figure 13.2.1. We can see from the graphs that, although both sequences show growth, (a) is not linear whereas (b) is linear. Arithmetic sequences have a constant rate of change so their graphs will always be points on a line. Figure 13.2.1.The arithmetic sequence explicit formula is: a_n=a_1+d(n-1) Where, a_{n} is the n th term (general term) a_{1} is the first term. n is the term position. d is the common difference. You create both arithmetic sequence formulas by looking at the following example: All of that over 2. Now, we've come up with a general formula, just a function of what our first term is, what our common difference is, and how many terms we're adding up. And so this is the generalized sum of an arithmetic sequence, which we call an arithmetic series. But now, let's ask ourselves this question. This is hard to remember.The straight-line method of amortization typically applies to bonds, but it can also be used to figure out mortgage repayments. Using the straight-line method of amortization formu...There are four main types of different sequences you need to know, they are arithmetic sequences, geometric sequences, quadratic sequences and special sequences. ... The overall formula for the sequence is 2n^{2}+5n-1. 4. Generate the first 6 terms of the sequence 3n-4 -4, -1, 2,5, 8, 11 .Formulas of Arithmetic Sequence. Mathematically, if a1, a2, a3 … are the terms of an arithmetic sequence, then, Formula 1: an+1 = an + d. where, n = set of natural numbers. d = common difference. General expression of arithmetic sequence = a, a + d, a + 2d, a + 3d … The general term, i.e., nth term in an arithmetic sequence is given by:May 8, 2017 ... Set up and solve a system of equations using the definition of the arithmetic sequence. Answer: a_n=-4+5(n-1) We know that from the general ...Formulas and Vocabulary for Finding Missing Numbers in Arithmetic Sequences Sequence: A sequence is a list of numbers such that there is a specific pattern that relates the terms of the sequence ...Hence, the average of all the numbers in the arithmetic sequence will become (2A1+ (N-1)*D)/2. Subsequently, the sum of N terms of the arithmetic sequence will become N* ( (2A1+ (N-1)*D)/2). We can calculate the sum of N terms in the arithmetic equation using this formula in python as follows. commonDifference = 2 print ("Common …Oct 6, 2021 · 2Sn = n(a1 + an) Dividing both sides by 2 leads us the formula for the n th partial sum of an arithmetic sequence17: Sn = n(a1 + an) 2. Use this formula to calculate the sum of the first 100 terms of the sequence defined by an = 2n − 1. Here a1 = 1 and a100 = 199. S100 = 100(a1 + a100) 2 = 100(1 + 199) 2 = 10, 000. .

Popular Topics