3. One of the following two initial value problems is separable, and one is not. (a) Use separation of variables to solve the separable differential equation, and solve for y as a function of t, simplifying your answer as much as possible. For the one that is not separable, use Euler's method to approximate the solution at t = 2, with At = 1 / 2. d 0f=2+ty, 9(1)=0 d3} 83; = i=4 (1)) When you used Euler's method above, did you get an overestimate or an underestimate of y(2)? Briey explain why. 1 (c) When you used Euler's method above, if you had used A1: = E\" would your estimate of y(2) have increased or decreased? Explain