Toronto Math Forum
MAT244--2019F => MAT244--Test & Quizzes => Quiz-4 => Topic started by: jinshuyu on October 18, 2019, 02:11:14 PM
Title:
TUT0601 Quiz4
Post by:
jinshuyu
on
October 18, 2019, 02:11:14 PM
This is the answer to my question
Title:
Re: TUT0601 Quiz4
Post by:
jinshuyu
on
October 18, 2019, 02:58:02 PM
4y"+ 9y = 0
4r^2 + 9 =0
r^2=-9/4
r=+-(-9/4)^0.5
r=+-3/2i
y=c1cos3/2t+c2sin3/2t