Question

Find the first four terms of the infinite sequence un= 1/7n-2


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Answer 1

To find the first four terms of the infinite sequence u_n = 1/(7n - 2), we substitute the values of n from 1 to 4 into the formula:

For n = 1:

u_1 = 1/(7(1) - 2) = 1/5

For n = 2:

u_2 = 1/(7(2) - 2) = 1/12

For n = 3:

u_3 = 1/(7(3) - 2) = 1/19

For n = 4:

u_4 = 1/(7(4) - 2) = 1/26

Therefore, the first four terms of the infinite sequence are:

u_1 = 1/5

u_2 = 1/12

u_3 = 1/19

u_4 = 1/26