Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §13.1 Surfaces and Level Curves, #33 · Multivariable Calculus · Partial derivatives

The surface … is a ______

The surface $z = 4 x + y$ is a ______. The surface $z = min (x, y)$ is formed from two ______. We are willing to exchange 6 left and 2 right shoes for 2 left and 4 right shoes but better is the average ______.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §13.1 Surfaces and Level Curves, #33

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