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If f(x)=x+t a n xa n df(x) is inverse of...

If `f(x)=x+t a n xa n df(x)` is inverse of `g(x),` then `g^(prime)(x)` is equal to `1/(1+(g(x)-x)^2)` (b) `1/(1+(g(x)+x)^2)` `1/(2-(g(x)-x)^2)` (d) `1/(2+(g(x)-x)^2)`

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