Toronto Math Forum
MAT2442019F => MAT244Test & Quizzes => Quiz4 => Topic started by: shizhiwei on October 18, 2019, 02:11:17 PM

find the general solution of the given diffrentiation equation
y''6y'+9y=0
r^26r+9=0
(r3)^2=0
r=3
the general solution is y=(C1)e^3t+(C2)e^3t