how to find inverse of function on ti 84?
['Enter your functions in the Y= editor. ... ', 'Press [2nd][MODE] to access the Home screen.', 'Press [2nd][PRGM][8] to insert the DrawInv function.', 'Press [ALPHA][TRACE] and choose the name of the function you entered. ... ', 'Press [ENTER] to display the graph of your function and draw the inverse of your function.']