Question 994132: find the general formula for (-1/4, 2/9, -3/16, 4/25,...)
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! looks like the formula is x divided by (x+1)^2 * (-1)^2
when x = 1, the term is 1/2^2 * (-1)^1 = -1/4
when x = 2, the term is 2/3^2 * (-1)^2 = 2/9
whehn x = 3, the term is 3/4^2 * (-1)^3 = -3/16
when x = 4, the term is 4/5^2 * (-1)^4 = 4/25
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