Solve the initial-value problem of Example 4 by the method of judicious guessing. Hint: Find the general solution of the differential equation in each of the intervals 0<t<1, 1<t<2, 2<t<3, 3<t<4, 4<t<5, 5<t<∞, and choose the arbitrary constants so that y(t) and y′(t) are continuous at the points t=1,2,3,4, and 5.