Problem:
Differentiate the following function:
$\cos ^{-1}(3 x-5)-\sinh ^{-1}(9 x)$
Answer:
$-\frac{9}{\sqrt{81 x^2+1}}-\frac{3}{\sqrt{1-(5-3 x)^2}}$
{'source': 'AMPS', 'file': 'amps/mathematica/calculus/derivatives/48352.txt'}