How to find a command in the catalog on a TI-89 Titanium

By E-Code · updated 2026-09-27

Press CATALOG, then the key with the command's first letter, without ALPHA (| for F jumps to factor(). Use ▼ to reach the command and ENTER to paste it onto the entry line.

Step by step

1. Open CATALOG. CATALOG Press CATALOG. It lists every built-in command from A to Z.
2. Jump to F. | Press | (F is written above it). In CATALOG a letter key jumps to the first command with that letter; don't press ALPHA first.
3. Paste the command. ENTER Press ENTER. factor(, the first F command, is pasted onto the entry line.
4. Every command is in there. The status line shows what a command needs. Use ▼ to go past the first one, or 2nd ▼ for a page at a time.

What the screen shows

The status line shows what a command needs. Use ▼ to go past the first one, or 2nd ▼ for a page at a time.

Look for factor( on the screen.

Try it with the keys lit up

This guide is one of E-Code's Learn lessons. Open it on E-Code's TI-89 calculator and each key lights up in turn as you press it.

Try “Find a command in the catalog” on the TI-89 calculator

Related

• Get a decimal instead of a fraction
• Plug a value into an expression
• Reuse an old answer
• Define your own function

Math programs for the TI-89 Titanium:

• Quadratic roots, exact when possible
• Linear system, exact answers
• Fraction calculator: exact, mixed, decimal

All TI-89 hidden tricks guides · All TI-89 guides · All calculator guides