Calculus
f−1(x)=2x−4f^{-1}\left(x\right)=\sqrt{2x-4}
f−1(x)=2x−6f^{-1}\left(x\right)=\sqrt{2x-6}
f−1(x)=x−32f^{-1}\left(x\right)=\sqrt{\frac{x-3}{2}}
f−1(x)=x−23f^{-1}\left(x\right)=\sqrt{\frac{x-2}{3}}