Let $f(x, y) = \cos(x) - \sin(y)$. • Find the slope of $f$ at the point ($x = \frac{\pi}{2}, y = 0$). • Find the second partial derivatives of $f$.
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$\frac{\partial f}{\partial x} = -\sin(x)$ $\frac{\partial f}{\partial y} = -\cos(y)$ Show more…
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