Somebody help me, I have calculus test tomorow?

  • Thread starter Thread starter JOnnySss
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JOnnySss

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My teacher was teaching Fourier Series, and he said that those questions is going to be in the test
Somebody help me, I don't have any how to solve it

uxx-uxy-6uyy=x
uxx-5uxy+6uyy=y
uxx-3uxy-4uyy=x

Thanks
 
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