Learn more with dummies

Enter your email to join our mailing list for FREE content right to your inbox. Easy!

How to Evaluate Expressions Using Interactive Math Boxes

By Jeff McCalla, Steve Ouellette

In the TI-Nspire Notes application, you can evaluate expressions using interactive math boxes. Press [MENU]→Insert→Math Box to type a mathematical expression in the TI-Nspire Notes application. Alternatively, press the shortcut key sequence [CTRL][M] to access the Math Box option.

Pressing some keys, such as [10x], automatically opens a math expression box.

When you open the Math Box tool, a dashed box opens and you can type your expression within this box. Press [ENTER] to evaluate the math box. Press the


key to move out of the dashed box and resume normal typing.

Text contained in a math expression box is italicized, just as in the Calculator application. However, some text (such as delvar) appears nonitalicized, indicating that you have typed a system command.

In the first screen, a fraction was typed in a math expression box and [ENTER] pressed to evaluate it. Notice that the answer is in simplified form and the answer is in a different color. In the next screen, an expression is typed to represent the golden ratio. Because this is not a TI-Nspire CAS, the answer displays as an approximate decimal. The third screen shows the math boxes after the attributes have been changed.