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If x^y=e^(x-y) , then (dy)/(dx) is (a)(1...

If `x^y=e^(x-y)` , then `(dy)/(dx)` is (a)`(1+x)/(1+logx)` (b) `(1-logx)/(1+logx)` (c) not defined (d) `(logx)/((1+logx)^2)`

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  10. Let U=sin^(-1)((2x)/(1+x^2)) and V=tan^(-1)((2x)/(1-x^2)) , then (d U)...

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