MediumPartial derivatives

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §13.1 Surfaces and Level Curves, #21 · Multivariable Calculus · Partial derivatives

The level curves of … are ______ through the point … except…

The level curves of $f = (y - 2) / (x - 1)$ are ______ through the point $(1, 2)$ except that this point is not ______.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §13.1 Surfaces and Level Curves, #21

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