1.If f:[1,∞)→[1,∞)f : [1, \infty) \to [1, \infty)f:[1,∞)→[1,∞) is defined by f(x)=1+1+4log2x2f(x) = \frac{1 + \sqrt{1 + 4\log_2 x}}{2}f(x)=21+1+4log2x, then f−1(3)=f^{-1}(3) =f−1(3)=a.000b.111c.646464d.1+52\frac{1+\sqrt{5}}{2}21+5Login to continueOnly logged in users canattempt or see the solution.