Problem:
Find the second derivative of the following function:
$-\sin \left(6-9 x^5\right)$
Answer:
$45 \left(45 x^8 \sin \left(6-9 x^5\right)+4 x^3 \cos \left(6-9 x^5\right)\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/calculus/second_derivatives/35591.txt'}