# constant expression on TI-92 Plus

#### PG1995

Joined Apr 15, 2011
832
Hi

I have TI-92 Plus emulator installed on my computer. I was trying to do integration of "-1/RC dt" where RC is a constant. To do the integration I had to replace "RC" with a number such as "2". I wanted to know if there is way to tell the calculator that certain expression, as in this case "RC", is a constant so that we don't have to replace the constant expression with some number such as "2". The linked video will help you to understand my question. Thank you.