Mathematics
Mathematics, 04.02.2020 00:45, econsta3

If u=f(x, y) where x=(e^s)(cos(t)) and y=(e^s)(sin( show that (du/dx)^2 + (du/dy)^2 = (e^(-/ds)^2+(du/dt)^2))

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If u=f(x, y) where x=(e^s)(cos(t)) and y=(e^s)(sin( show that (du/dx)^2 + (du/dy)^2 = (e^(-/ds)^2+(d...

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