Here is my problem:

I created two variables **a** and **b** and want to add, subtract, multiply them and have CL check for correctness. I think have to do this in the graphing calculator. But I want students to have to input using latex (otherwise they will just put in the expression!)

So if I create a variable **c** in the graphing calculator how do I covert that number to latex so I can check when a student puts it in math type (expression)?

Hope that makes sense!