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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §15.1 Vector Fields, #32 · Multivariable Calculus · Vector calculus

The equipotentials are the parabolas … and … is a gradient field

Write down the vector fields $M i + N j$ .

The equipotentials are the parabolas $y = x^{2} + c$ and $F$ is a gradient field.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §15.1 Vector Fields, #32

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