qqp question1: Let f(x)=min {tan x, cot x} where x belongs to the set of real numbers. What is the range, fundamental period, points of discontinuity and points of non-differentiability of f(x)? question2: What is [math]f(x)[/math] in the math problem [math]f(x)=x+f(1+\frac{1}{x})?[/math]