Question 7 Give an equation of the form f(z) - Acsc(BI - C) + D which could be used to represent the given graph. (Note: C or D may be zero O 3 TC 2n 2 -2 a) Of(z) - 4csc 1 5 4 1 b) Of(z) = -2 csc 1 5 41 c) Of(z) = -2csc(1 - 1 d) of(z) - 2cscr