The factors of an integer are those numbers that evenly divide into the integer. Given the integer n, create a list of all the factors of n, excluding 1 and n itself. The list should be ordered from smallest to largest. Associate the new list with the variable factors.

For positive constants a and b, the force between two atoms in a molecule is given f(r) = −a r2 + b r3 , where r > 0 is the distance between the atoms. note: a and b are upper case letters. (a) find f '(r) = (b) find the critical point for f(r). r = (c) find f ''(r) = (d) find the value of r so that f ''(r) = 0.