Texas Instruments TI-89 - Overview of the Algebra Menu

70 Chapter 3: Symbolic Manipulation
03SYMBOL.DOC TI-89/TI-92 Plus: Symbolic Manipulation (English) Susan Gullord Revised: 02/23/01 10:52 AM Printed: 02/23/01 2:12 PM Page 70 of 24
From the Home screen, press
„
to display:
This menu is also available from the
MATH
menu. Press
2I
and then select
9:Algebra
.
Menu Item Description
solve
Solves an expression for a specified variable. This
returns real solutions only, regardless of the
Complex Format
mode setting. Displays answers with
"
and
" and "
or
" connecting solutions. (For complex
solutions, select
A:Complex
from the
Algebra
menu.)
factor
Factors an expression with respect to all its
variables or with respect to only a specified
variable.
expand
Expands an expression with respect to all its
variables or with respect to only a specified
variable.
zeros
Determines the values of a specified variable that
make an expression equal to zero. Displays in a list.
approx
Evaluates an expression using floating-point
arithmetic, where possible. This is equivalent to
using
3
to set
Exact/Approx = APPROXIMATE
(or using
¥¸
to evaluate an expression).
comDenom
Calculates a common denominator for all terms in
an expression and transforms the expression into a
reduced ratio of a numerator and denominator.
propFrac
Returns an expression as a proper fraction
expression.
nSolve
Calculates a single solution for an equation as a
floating-point number (as opposed to
solve
, which
may display several solutions in a rational or
symbolic form).
Overview of the Algebra Menu
You can use the
„
Algebra
toolbar menu to select the most
commonly used algebraic functions.
The Algebra Menu
Note: For a complete
description of each function
and its syntax, refer to
Appendix A.