(a) Create a function called npf that takes as input x, , and o. It then calculates y= f(x), making sure that the calculations can be done if x is a number, vector or matrix, just as the sin function works (o and are numbers and it is assumed the user will do this correctly; no error checking is done on this). For =0 and a = 1, graph y=f(x) for x = [-5,5]. Graph the following two plots on the same figure. The first should be of y=f(x) for x = [130, 170], = 150.24, and a = 8.44. The second should be for y=f(x) for xe [130, 1701, p=153.07, and o=9.24. Have a legend for this, with the first plot having the title "Verbal Reasoning" and the second plot having the title "Quantitative Reasoning". The overall title should be "GRE Test Scores July 1, 2015 to June 30, 2018" [5, p. 18]. (b) (c) f(x) = 1 O2