MediumDifferentiation rules

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §4.4 Inverses of Trigonometric Functions, #33 · Calculus · Differentiation rules

Find the slope … of … at (a) … (b) … (c)…

Find the slope $d x / d y$ of $x = tan^{- 1} y$ at
(a) $y = - 3$ (b) $x = 0$ (c) $x = - π /4$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §4.4 Inverses of Trigonometric Functions, #33

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