# Q4. if the function f; $\left[1,\infty \right)\to \left(1,\infty \right)$ is defined by f (x) = ${2}^{x\left(x-1\right)}$ , then f${}^{-1}$ (x) is (A) ${\left(\frac{1}{2}\right)}^{x\left(x-1\right)}$ (B)  (C) (D) not defined

Whats wrong with the experts??? Why aren't you answering......
• 0
What are you looking for?