The following function is injective or not?  s : C → C, s(z) = z^2 (Note: C means the complex number)

Which of the following statements describes a component of the domain of the function = 2tan () - 1? A B C 16 EN X H D x 2π x=-4π

Given f(x) = 2(x − 3)² – 5, a) State the domain. b) Find the inverse. c) State whether the inverse is a function or not. Justify your answer. 5. If f(x) = x² - 6x + 14 and g(x) = -x² - 20x -k, determine the value of k so that there is exactly one point of intersection between the two parabolas.

10) Consider the function f(r) = 7æ² – 8x. Evaluate the following expressions, and simplify your answers. a) f(2) b) f(-2) c) f(3x) d) f(x+3)