Use the Chain Rule to find the indicated partial derivatives. $u = \sqrt{r^2 + s^2}$, $r = y + x \cos(t)$, $s = x + y \sin(t)$; $\frac{\partial u}{\partial x}$, $\frac{\partial u}{\partial y}$, $\frac{\partial u}{\partial t}$ when $x = 1$, $y = 2$, $t = 0$ $\frac{\partial u}{\partial x} = \boxed{} $\frac{\partial u}{\partial y} = \boxed{} $\frac{\partial u}{\partial t} = \boxed{}$
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To find the partial derivative of u with respect to r, we need to apply the chain rule. The chain rule states that if u = f(g(x)), then the derivative of u with respect to x is given by du/dx = f'(g(x)) * g'(x). In this case, u = Vr^2 + s^2, and r = y + x Show moreβ¦
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