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**Graphing Calculator Solutions for Simultaneous Equations**

**TI-86 Simultaneous Equation Solver**

- Hit [2nd], [SIMULT] to display the simultaneous equation solver number screen.
- Enter an integer greater than one and less than or equal to 30 for the number of simultaneous equations.
For example, you have found these two simultaneous equations in a tension problem: You would enter
*number=2*
- 0.64 T
_{1} + 0.42 T_{2} - 500 = 0
- -0.77 T
_{1} + 0.91 T_{2} = 0
- The coefficients editor is displayed. Enter a value for each of the coefficients in the equation. Enter into
*b* the solution to the equation. For example, in the two equations given above you would enter:
- a
_{1}, 1 = 0.64
- a
_{1},2 = 0.42
- b
_{1} = 500
- a
_{2}, 1 = 0.77
- a
_{2}, 2 = 0.91
- b
_{2} = 0
- Now hit [SOLVE] and the solutions are displayed.

Vectors Applications Notes