If f(x + 1/x) = x^2 + 1/(x^2) , then f(t) equals to : – InterviewSolution

1.	If f(x + 1/x) = x^2 + 1/(x^2) , then f(t) equals to :
Answer» `t^2-1/t^2` `t^2+1/t^2` `t^2+2` `(t-1)^2` Solution :SINCE `F(x-1.x) = x^2 + 1/x^2` `rArr f(x-1/x) = (x-1/x) + 2` HENCE `f(t) = t^2 + 2`

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