- #1
CAF123
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Homework Statement
I have an expression for the partial derivative of u with respect to s, which is [tex] \frac{\partial\,u}{\partial\,s} = \frac{\partial\,u}{\partial\,x}x + \frac{\partial\,u}{\partial\,y}y [/tex]
How do I compute [itex] \frac{\partial^2u}{\partial\,s^2} [/itex] from this?