How to Get a TI-89 to Display in Radicals


The Texas Instruments TI-89 is a scientific graphing calculator that is capable of displaying radicals directly on the screen. The user can switch to radical mode through the calculator's menu system. Once the calculator is in radical mode, users can enter radicals using the square root button and parentheses keys. The TI-89 family consists of two calculators: the TI-89 and the TI-89 Titanium. Both calculators use the same process for displaying radicals.

  • Press the "MODE" key and select "Complex Format."

  • Press the right arrow button to select "2:RECTANGULAR" and press the "ENTER" key.

  • Press the "F2" button and scroll down to "Exact/Approx." Select "2:EXACT" and press "ENTER."

  • Press the "2nd" button, then press the "SQUARE ROOT" button to insert a radical sign. Type a parenthesis, then enter your calculation. The TI-89 displays the answer as a radical.


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