exercise 1

1. Consider the function y = x2 + 1. (a) Find the differential of y (dy). (b) Calculate dy when x = 0 and dar = 1. Illustrate your answer graphically. (c) Calculate dy when x = 1 and dx = 0. Illustrate your answer graphically. (d) Calculate dy when x = 1 and do = 1. Illustrate your answer graphically