Texas-instruments TI-73 EXPLORER User Manual download pdf (Page 47)

Chapter 2: Math Operations

7302ENG.DOC CH2 Math Operations, English Julie Hewlett Revised: 07/29/98 11:58 AM Printed: 05/19/99 8:58

AM Page 41 of 32

bound

limits apply to the unknown variable value for which

you are solving. Default bounds are {M1©99,1©99}. Use these

limits to narrow the unknown value solution to a specific

range of numbers, especially if more than one answer exists.

Hint: For answers with many solutions (for example, trig

functions), consider graphing the function first to get an idea

of the most ideal (or specific)

bound

limits.

Solve

Specify the unknown variable from the

Solve

line. This

prompts the calculator to solve for it.

To select a variable on the

Solve

line, highlight the unknown

variable with the cursor, and then press b. After you press

b, a solid black square appears next to the solved

(previously unknown) variable displayed in the Equation

Variables section.

Hint: The Solver allows for a small tolerance when solving a

result, which is noticeable especially when solving complex

equations or those with multiple solutions. For example, a

result of 3.99999999999999 (instead of 4) for the equation

16=x

is considered a correct answer.

Solving Equations with Only One Possible Answer

For 2(L+M)=N, solve for L when N=268, and M=40, M14, and

307.

1. Define the equation on the

EQUATION SOLVER

screen.

$: (if necessary)

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Texas-instruments TI-73 EXPLORER User Manual Page 47