In a math class in college they said we were only allowed to use our TI-83s. So I wrote some programs (from scratch) that solved the types of equations we were

In a math class in college they said we were only allowed to use our TI-83s. So I wrote some programs (from scratch) that solved the types of equations we were doing and breezed through the class. I think that application of the rule was ethical though unforeseen.