For positive constants A and B, the force between two atoms in a molecule is given by the following equation, where r > 0 is the distance between the atoms.
For positive constants A and B, the force between two atoms in a molecule is given by the following equation, where r > 0 is the distance between the atoms.
Find f '(r).
Find the critical point for f(r).
rewrite as $\displaystyle f(r) = -Ar^{-2} + Br^{-3}$
now use the power rule to find $\displaystyle f'(r)$
to find the critical points, set $\displaystyle f'(r) = 0$ and solve for $\displaystyle r$