E-CodeHow to use a TI-89: step-by-step guides
34 guides for the TI-89 Titanium, in 7 subjects. Each one shows the keys to press, one step at a time, and what the screen shows at the end.
Hidden tricks
- Get a decimal instead of a fraction
- Plug a value into an expression
- Reuse an old answer
- Define your own function
- Find a command in the catalog
All TI-89 hidden tricks guides
Algebra
- Solve an equation exactly
- Factor and expand expressions
- Solve a system of equations
- Find complex roots
- Add fractions into one with a common denominator
- Split a fraction into partial fractions
Precalc & Trig
- Get exact trig values
- Expand and collect trig identities
- Switch to degree mode
- Convert a complex number to polar form
All TI-89 precalc & trig guides
Calculus
- Find an exact integral
- Find a derivative at a point
- Find a limit
- Find a Taylor polynomial
- Add up a series with sigma
- Find arc length and the maximum of a function
- Solve a differential equation
Statistics
Science
- Convert units
- Use built-in physics constants
- Solve a formula for any variable
- Use scientific notation
- Use units in a calculation
Engineering
- Convert a number to binary
- Multiply complex numbers for AC circuits
- Solve simultaneous equations with a matrix
- Find the eigenvalues of a matrix
- Solve an RC circuit with a differential equation