Find the Sum of the Arithmetic Sequence 2 5 8
Here we seem to have a rule. For instance the sequence 5 7 9 11 13 15. Write As Expanded Sum Sequence And Series Sum Arithmetic Sequences This is impractical however when the sequence contains a large amount of numbers. . Where represents the first number in the sequence is the common difference between consecutive numbers and is the -th number in the sequence. The first term of the arithmetic progression is. A n a 1 n-1d. Values a and d are easy to find. The formula to find the sum of the first n terms of our sequence is n divided by 2 times the sum of twice the beginning term a and the. Part 1 of 3. Now we know that the second term is 37. A 10 325. A 1. So if the sequence is 2 4 6 8. Sequences What is a sequence. Make sure you have an arithmetic sequence. A 3 425. A The second term is. The sum of the first three terms is. A 4d So the first three. For exa...