Common Errors – TI-84 Calculator Online

While using the TI-84 calculator, you may encounter various errors. Understanding these will help you debug problems quickly and avoid confusion.

⚠️ Syntax Error

Occurs when the calculator cannot interpret your input correctly. Often caused by:

• Missing or unmatched parentheses.
• Incorrect function structure (e.g., typing sin90 instead of sin(90)).

📐 Domain Error

This means the value you entered is outside the valid range for that function:

• Taking the square root of a negative number.
• Using a logarithm on a non-positive number.

📏 Dimension Mismatch

This error shows up during matrix operations when the size/shape of the matrices don’t match the required format.

🧮 Undefined Variable

Happens when you use a variable or program that hasn’t been created or named yet. Make sure to define any variable before referencing it.

If you get an error, press 2nd + Trace to access the error help menu and see where the mistake happened.