2. Repeat problem 1 with a step size of At = 0.1. Which step size gives better accuracy? 3. Now consider the IVP y'= sin(t2y + y³) + y, y(0) = 1. We cannot easily solve this problem by hand. Use forward Euler's method to approximate the solution on the time interval [0, 1] with a step size of At = 0.2.