f(x) = 2x sqrt(x^2-1) I got my answer as (4x^2 - 2)/sqrt(x^2 - 1).. IS it right?? Or is the answer (4x^2 - 1)/sqrt(x^2 - 1)??
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Originally Posted by elpermic f(x) = 2x sqrt(x^2-1) I got my answer as (4x^2 - 2)/sqrt(x^2 - 1).. IS it right?? Or is the answer (4x^2 - 1)/sqrt(x^2 - 1)?? $\displaystyle (4x^2 - 2)/sqrt(x^2 - 1)$ That's the right one.
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