arithmetic sequence

arithmetic sequence   Dan arithmetic sequence

A geometric sequence goes from one term to the next by always multiplying by the same value So 1, 2, 4, 8, 16, is geometric, because each step

The formula for the sum of an arithmetic sequence is: S n = n 2 , where: n = the number of terms to be added; a = the first term in the A sequence such as 1, 5, 9, 13, 17 or 12, 7, 2, –3, –8, –13, –18 which has a constant difference between terms The first term is a1, the common difference is d

ครีมนัมจู The formula for the sum of an arithmetic sequence is: S n = n 2 , where: n = the number of terms to be added; a = the first term in the In the next example the common difference is negative E X A M P L E 2 An arithmetic sequence of decreasing terms Write a formula for the nth term of the