MAT244--2019F > Quiz-4
Quiz 4 TUT0202
(1/1)
Mengyuan Wang:
4y'' + 12y' + 9y = 0
let y = e^rt
y' = re^rt
y''= r^2e^rt
4r^2 + 12r +9r = 0
r = -(2/3)
thus
y = c1e^(-(2/3))t + tc1e^(-(2/3))t
Navigation
[0] Message Index
Go to full version