Problem:
Evaluate the function $f(x)=-\log (4 x-4)-\tan ^{-1}(x+7)$ at the point $x=26$
Answer:
$-\tan ^{-1}(33)-\log (100) = -6.146$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/function_evaluation/8790.txt'}