Toronto Math Forum
MAT2442019F => MAT244Test & Quizzes => Quiz4 => Topic started by: Yu Qi Huang on October 18, 2019, 02:12:16 PM

Find the general solution for y''  6y' + 9y = 0.
Solution:
changing it into characteristic equation it becomes:
r^2  6r + 9 = 0
(r3)^2 = 0
r = 3
Hence y(t) = c_1e^(3t) + c_2te^(3t)