Problem:
Find the second derivative of the following function:
$\log \left(\frac{23}{3}-\frac{25 x^4}{3}\right)$
Answer:
$-\frac{100 x^2 \left(25 x^4+69\right)}{\left(23-25 x^4\right)^2}$
{'source': 'AMPS', 'file': 'amps/mathematica/calculus/second_derivatives/14396.txt'}