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EasyPartial derivatives

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §13.1 Surfaces and Level Curves, #7 · Multivariable Calculus · Partial derivatives

For $f_{5}$ to $f_{10}$ draw the level curves $f = 0, 1, 2$ . Also $f = - 4$ .

$f_{7} = x e^{- y}$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §13.1 Surfaces and Level Curves, #7

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