2016-06-16

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3Blue1Brown

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/multivariable-calculus/applications-of-multivariable-derivatives/quadratic-approximations/v/quadratic-approximation-formula-part-2

A continuation from the previous video, leading to the full formula for the quadratic approximation of a two-variable function.