C-01-Q172mediumsingle_mcqF:R→RF : \mathbb{R} \to \mathbb{R}F:R→R, F(x)=xF(x) = xF(x)=x হলে F−1(x)=?F^{-1}(x) = ?F−1(x)=?axxxb−x-x−xc1/x1/x1/xd