If f(x)=2x+2−xf(x) = 2^x + 2^{-x}f(x)=2x+2−x, find the inverse function f−1(x)f^{-1}(x)f−1(x) for x≥2x \geq 2x≥2.
log2(x+x2−4)\log_2(x + \sqrt{x^2-4})log2(x+x2−4)
log2(x+x2−42)\log_2(\frac{x + \sqrt{x^2-4}}{2})log2(2x+x2−4)
12log2(x2−4)\frac{1}{2}\log_2(x^2-4)21log2(x2−4)
log2(x)\sqrt{\log_2(x)}log2(x)