MediumDifferentiation rules

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §4.1 The Chain Rule, #43 · Calculus · Differentiation rules

Find the second derivative of (a) … (b) … (c)

Find the second derivative of
(a) $sin (x^{2} + 1)$
(b) $x^{2} - 1$
(c) $cos x$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §4.1 The Chain Rule, #43

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