calculus help? series problem?
i cant for the life of me figure out this problem even though i feel like i know how to do it please help. I dont know what i am doing wrong
Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues.
{-1/4, 2/9, -3/16, 4/25, ...}
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(-1)^(x) * x / (x + 1)^2
That should work
x = 1
1 * (-1)^1 / (1 + 1)^2 =>
1 * (-1) / 2^2 =>
-1 / 4
x = 2
2 * (-1)^2 / (2 + 1)^2 =>
2 * (1) / 3^2 =>
2/9
There you go.