Texas Instruments TI-89 Titanium Short User Manual page 250

Use the "|" operator to restrict the solution interval
and/or other variables that occur in the equation or
inequality. When you find a solution in one interval,
you can use the inequality operators to exclude that
interval from subsequent searches.
is returned when no real solutions are found.
false
is returned if
true
finite real value of
inequality.
Since
solve()
can use "and," "or," and "not" to combine results
from
solve()
expressions.
Solutions might contain a unique new undefined
variable of the form @
the interval 1–255. Such variables designate an
arbitrary integer.
In real mode, fractional powers having odd
denominators denote only the real branch.
Otherwise, multiple branched expressions such as
fractional powers, logarithms, and inverse
trigonometric functions denote only the principal
branch. Consequently,
solutions corresponding to that one real or principal
branch.
Note: See also
.
zeros()
equation1
solve(
varOrGuess2
Returns candidate real solutions to the
simultaneous algebraic equations, where each
varOrGuess
solve for.
Optionally, you can specify an initial guess for a
variable. Each
variable
– or –
variable
For example,
244
can determine that any
solve()
satisfies the equation or
var
always returns a Boolean result, you
with each other or with other Boolean
j j
with being an integer in
n
produces only
solve()
,
cSolve() cZeros()
equation2 ...
and [and
}) ⇒
... Boolean expression
[ ]
,
specifies a variable that you want to
must have the form:
varOrGuess
=
real or non-real number
is valid and so is
x
In Radian angle mode:
solve(tan(x)=1/x,x)|x>0 and
x<1 ¸
solve(x=x+1,x) ¸
solve(x=x,x) ¸
2xì 1 1 and solve(x^2ƒ9,x) ¸
In Radian angle mode:
solve(sin(x)=0,x) ¸ x = @n1ø p
solve(x^(1/3)=ë 1,x) ¸
solve(‡(x)=ë 2,x) ¸
solve(ë ‡(x)=ë 2,x) ¸
, , and
nSolve()
varOrGuess1
], { , solve(y=x^2ì 2 and
x+2y=ë 1,{x,y}) ¸
.
x=3
Appendix A: Functions and Instructions
x =.860
false
true
1 and x ƒ ë 3
x
x = ë 1
false
x = 4
x=1 and y=ë 1
or x=ë 3/2 and y=1/4
...