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23. If u = f(x — сt) + g(x+ct), show that д?и дх2 1 Ә?u с2 Әt2

Posted: Tue Sep 07, 2021 7:45 am
by answerhappygod
 1
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23. If u = f(x — сt) + g(x+ct), show that д?и дх2 1 Ә?u с2 Әt2