APFIVE Product and Chain Rule Differentiation
$$\displaystyle\frac{d}{dx} \left( x^3 \sec(\ln(x)) \right) = $$
A
$$\displaystyle\frac{3x^3 \sec(\ln(x)) \tan(\ln(x))}{x}$$
B
$$3x^2 \sec(\ln(x)) \tan(\ln(x))$$
C
$$3x^2 \sec(\ln(x)) + x^2 \tan(\ln(x))$$
D
$$x^2 \sec(\ln(x))[3 + \tan(\ln(x))]$$
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