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Answer by Nasser for how to plot the function in the following
Since $\Phi$ is in terms of $\xi,\eta$ and not in terms of $x,y$ we first have to express $\xi,\eta$ in $x,y$ before taking the gradientClearAll["Global`*"]eq1 = x == Cosh[xi]*Cos[eta]eq2 = y ==...
View Articlehow to plot the function in the following
$$\Phi=e^{-\xi}*\cos\eta-\xi$$$$x=\cosh\xi*\cos\eta$$$$y=\sinh\xi*\sin\eta$$how to plot streamline $\nabla\Phi$ in x-y coordinate.
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