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Problem with threee differential equations

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Melda Harlova
Melda Harlova 2019-12-28
关闭： John D'Errico 2019-12-28
Can someone help me with these three equatons. They have to solve with matlab code.
Here are :
1.
y'' - y = 0
y(0)=0
y(1)=1
2.
y''-y=-4(sin^3)x + 9sinx
y(0) = y(2*pi)
3.
Ut=Uxx + U + 2sin2xsinx
U = U(x,t) where x is (0;pi/2) and t >0
Thnak you in advance!

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