Texas Instruments TI-83 Converting to a Fraction: The Quadratic Formula

Getting Started 7

8300GETM.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 11:06 AM Printed: 02/19/01 11:06

AM Page 7 of 18

You can show the solution as a fraction.

1. Press  to display the MATH menu.

2. Press 1 to select 1:4Frac from the MATH

menu.

When you press 1, Ans4Frac is displayed on

the home screen. Ans is a variable that

contains the last calculated answer.

3. Press Í to convert the result to a

fraction.

To save keystrokes, you can recall the last expression you entered, and then

edit it for a new calculation.

4. Press y [ENTRY] (above Í) to recall

the fraction conversion entry, and then

press y [ENTRY] again to recall the

quadratic-formula expression,

−+−

bb ac

5. Press } to move the cursor onto the + sign

in the formula. Press ¹ to edit the

quadratic-formula expression to become:

−−−

bb ac

6. Press Í to find the other solution for

the quadratic equation 3X2 + 5X + 2 = 0.

Converting to a Fraction: The Quadratic Formula