C-01-Q147mediumsingle_mcqFor the same fff, the inverse f−1(x)f^{-1}(x)f−1(x) = ?ax−13\dfrac{x - 1}{3}3x−1bx+13\dfrac{x + 1}{3}3x+1c3(x−1)3(x - 1)3(x−1)d3(x+1)3(x + 1)3(x+1)