Please show your work and justify all answers. 1. Use (forward) Euler's method to approximate the solution of the IVP y'= -3y, y(0) = 1 on the interval [0, 1] with a step size of At = 0.2. You can use a calculator to help with the arithmetic. Compare your approximate value for y(1) with the true value of y(1). 2. Repeat problem 1 with a step size of At = 0.1. Which step size gives better accuracy?