Final answer to the problem
$108\sin\left(3x\right)$
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Step-by-step Solution
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1
Simplifying
$\frac{d^2}{dx^2}\left(-12\sin\left(3x\right)+9x\right)$
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$\frac{d^2}{dx^2}\left(-12\sin\left(3x\right)+9x\right)$
Learn how to solve problems step by step online. Find the higher order (2) derivative of -12sin(3x)-18xcos(3x)9x18xcos(3x). Simplifying. Find the (1) derivative. Find the (2) derivative.
Final answer to the problem
$108\sin\left(3x\right)$