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HOW TO GRAPH DERIVATIVES WITH TI89 CALCULATOR

Steps Key Sequence Screens
1. Input Function Press DIAMOND key, then F1 (for Y=)
2. Find the Derivative Function Press CATALOG, then the comma key
  Press ENTER
3. Input the Function Type y1(x)
4. Input Variable Press comma, then the variable
5. Execute Derivative Press ')', then ENTER
6. Graph Press F2, then 6 (for ZoomStd)
NOTE: Press F3 to trace the functions. Use left/right arrow keys to move along the functions and use up/down arrow keys to move between the function and its derivative.