Question 3. Define the function f : R\\ {0} -> R by f(x) = -1 (a) Sketch the graph of y = f(x). (b) Find the range of f. (c) Determine whether or not f is bijective. (d) Show that for any r ER\\(0, 1}, fof of (x) = r. Does this equation hold when r = 0 or 1?Question 2. Consider the function 193 f(x) = 1+ 93\"- (a) What is the natural domain of the function f? Explain why. {b} Show that f is an odd function