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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §15.1 Vector Fields, #29 · Multivariable Calculus · Vector calculus

The gravitational force … comes from two unit masses at … and…

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

The gravitational force $F$ comes from two unit masses at $(0, 0)$ and $(1, 0)$ .

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §15.1 Vector Fields, #29

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