If the function f:R→R be defined by f(x)=2x−3 and g:R→R by g(x)= – InterviewSolution

1.	If the function f:R→R be defined by f(x)=2x−3 and g:R→R by g(x)=x3+5, then find fog and show that fog is invertible. Also find (fog)−1, hence find (fog)−1(9).
Answer» If the function $f : R \to R$ be defined by $f (x) = 2 x - 3 a n d g : R \to R$ by $g (x) = x^{3} + 5,$ then find fog and show that fog is invertible. Also find $(f o g)^{- 1},$ hence find $(f o g)^{- 1} (9) .$

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