In: Advanced Math
The formula for a particular solution given in (3.42) applies to the more general problem of solving y" + p(t)y' + q(t)y = f(t). In this case, y1 and y2 are independent solutions of the associated homogeneous equation y" + p(t)y' + q(t)y = 0. In the following, show that y1 and y2 satisfy the associated homogeneous equation, and then determine a particular solution of the inhomogeneous equation:
b.) ty" - (t + 1)y' + y = t2e2t; y1(t) = 1 + t, y2(t) = et (answer should be: 1/2 (t -1) e2t + 1/2 + t/2 )
c.) t2y" - 3ty' + 4y = t5/2; y1(t) = t2, y2(t) = t2ln(t) (answer should be: 4t5/2 )