Question #5c4d2

1 Answer
Euan S.
Sep 6, 2017

(dy)/(dx) = -(8/(9x^4) + 9 sin(x))

Explanation:

y = 8/3^3 x^(-3) + 9 cos(x)

The first term just requires a simple application of the power rule, while the second is a standard derivative:

(dy)/(dx) = 8/3^3 (-3) x^(-4) - 9 sin(x)

(dy)/(dx) = -(8/(9x^4) + 9 sin(x))

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