Science talk:Math Exam Resources/Courses/MATH104/December 2014/Question 05 (a)

I usually don't complain about just hints but I hardly find this hint on its own useful. A hint stating the relationship and then a hint to use the product rule would be good.

Though the hint to use the product rule only comes if you rearrange the formula - so perhaps another solution with the quotient rule as well which is more manifest for students?

The next reviewer can be the judge.