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Author Topic: TUT0602 Quiz 4  (Read 5242 times)

Jingwen Deng

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TUT0602 Quiz 4
« on: October 18, 2019, 01:19:23 PM »
Q: 4y''+9y=0

A:
4r^2+9=0
r^2=-9/4
r=3/2*i
λ=0, μ=3/2
y(t) = c1cos(3/2*t)+c2sin(3/2*t)
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