There are many ways to use the TI-89 in algebra, trigonometry, and calculus. A number of these are covered in this tutorial. Many of the topics are applicable to more than one of the courses. Many of these examples depend on your being able to properly enter a function.

### Algebra

1. Logs - change of base
2. Analyzing the asymptotic behavior of a function
3. Finding a zero (root of a function)
4. Finding a minimum or maximum value of a function
5. Finding where two graphs of functions intersect
6. Graphing a piecewise graph, and the greatest integer function
7. Graphing a circle
8. Graphing an inverse
9. Graphing a tangent line to a curve
10. Solving equations
11. Solving a system of equations
12. Find the least common multiple or greatest common divisor
13. Factor an expression
14. Expand an expression
15. Find a common denominator
16. Convert from one unit to another

### Trigonometry

1. Finding a zero (root) of a function
2. Finding a minimum or maximum value of a function
3. Finding where two graphs of functions intersect
4. Graphing inverse trig functions
5. Graphing polar curves
6. Converting to DMS notation
7. Converting coordinates from polar to rectangular or rectangular to polar
8. Calculating trigonometric and inverse trigonometric functions

### Calculus

1. Analyzing the asymptotic behavior of a function
2. Finding a zero of a function
3. Finding a minimum or maximum value of a function
4. Finding where two graphs of functions intersect
5. Evaluating a derivative or integral on a graph
6. Finding the derivative or integral of a function on the home screen
7. Tracing the path of a parametric function
8. Graphing a derivative
9. Graphing an integral
10. Graphing a tangent line to a curve
11. Finding the terms in a sequence
12. Finding arc length
13. Find a limit
14. Find a Taylor polynomial
15. Differential equations
16. Convert from one unit to another