Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §13.4 Directional Derivatives and Gradients, #19 · Multivariable Calculus · Gradient & optimization

Compute the … vectors for … and draw them at a point…

Compute the $N, U, L$ vectors for $f = 1 - x + y$ and draw them at a point on the flat surface.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §13.4 Directional Derivatives and Gradients, #19

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