The answer to the riddle:

Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.
Find the derivative at the given value.