Problem:
Evaluate the function $f(x)=\sin \left(\frac{18}{5}-\frac{7 x}{5}\right)+\cosh ^{-1}\left(\frac{31 x}{5}+\frac{28}{5}\right)$ at the point $x=19$
Answer:
$\cosh ^{-1}\left(\frac{617}{5}\right)-\sin (23) = 6.355$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/function_evaluation/22398.txt'}