MAT244--2019F > Quiz-4

TUT0602 Quiz 4

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Jingwen Deng:
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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