1. The problem statement, all variables and given/known data Rewrite the following expression as a single product. Hint: Perform a change of variable first. 2. Relevant equations 3. The attempt at a solution I looked at the example from the book regarding a change of variable. They first started out by calculating the upper and lower limits of the expression. However, in this the upper limits and lower limits are different. For example, the right product expression has an upper limit of n - 1 while the left has an upper limit of n. Furthermore, I can make for example j = k+1 but then what about k+2? Would I need to introduce a new variable or do i make j = (k+1) + 1 to represent k +2? How do I go about performing a change of variable with this expression?