Texas Instruments TI-89 Manuale Utente
Symbolic Manipulation
256
Note:
For a complete description of each function and its syntax, refer to the Technical
Reference module.
Menu Item
Description
solve
Solves an equation for a specified variable. This returns
real solutions only, regardless of the Complex Format
mode setting. Displays answers with "
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.)
A:Complex from the Algebra menu.)
factor
Factors an expression with respect to all its variables or
with respect to only a specified variable.
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.
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.
an expression equal to zero. Displays in a list.
approx
Evaluates an expression using floating-point arithmetic,
where possible. This is equivalent to using
where possible. This is equivalent to using
3
to set
Exact/Approx = APPROXIMATE (or using
8 ¸
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.
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).
point number (as opposed to solve, which may display
several solutions in a rational or symbolic form).