20. [-13 Points] LARPCALC112.PS.008. 0/6 Submissions Used The multiplicative inverse of a complex number 2 is a complex number zm such that z - zm = 1. Find the multiplicative inverse of each complex number. (Enter your answers in the form a + bi.) (a) z=9+i N H N | (b) (c) z=3+9i Need Help? 22. [-/6 Points] LARPCALC11 2.PS.011. 0/6 Submissions Used EX Consider the function f(x) = . (x b)2 (a) Determine the effect on the graph of fwhen b 0 and a is varied. Consider cases in which a is positive and a is negative. As la] increases, the l -Selec1-- v l . When a changes signs, the . (b) Determine the effect on the graph of fwhen a 0 and bis varied. . When b > 0, the graph is translated . When b