In Problems 39 and 40 use Problem 51 in Exercises 1.1 and (2) and (3) of this section.
39. Find a function y = f (x) whose graph at each point (x, y) has the slope given by 8e2x+ 6x and has the y-intercept (0, 9).
40. Find a function y = f (x) whose second derivative is y” = 12x – 2 at each point (x, y) on its graph and y= -x + 5 is tangent to the graph at the point corresponding to x = 1.