and gmded as zer directly. Write legibly and show each step of your answers clearly to receive full credit Duration: 80 minutes December 16 Q1.(30 pts) Given that y = r is a solution of dạy (G? - 1) du2 dy HIN + 2y = 0, find a linearly independent solution by reducing the order. Write the general solution. Q2.(20 pts) Use the method of undetermined coefficients method to find a particular solution of y" - y" - 2y = e" cos r -- 2? + r. Do not calculate the coefficients.