Comment by ninetyninenine

Here’s another cheat I executed. The ti84 has the same encasing as the ti89. Take the circuit board and buttons out of the ti89 put it in the ti84. Voila you have an integrator. Most teachers in calc allow a ti84 and not a ti89 because the ti89 can do symbolic integration.

I did this cheat way back. It helps but you’re still required to show work on tests so this just verified all my answers. Be sure to clear screen if teacher walks by.