Let . Which of the following is…

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let f(x)=5x−7f(x)=5x-7. Which of the following is f−1(x)f^{-1}(x)? (a) 5x+75x+7 (b) x−75\dfrac{x-7}{5} (c) x+75\dfrac{x+7}{5} (d) x5+7\dfrac{x}{5}+7

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