Texas Instruments TI-89 Titanium Short User Manual page 168

comDenom(
ratio of numerator and denominator expanded with
respect to
sorted with
of var
factoring of the collected coefficients. Compared to
omitting
screen space, while making the expression more
comprehensible. It also makes subsequent
operations on the result faster and less likely to
exhaust memory.
If does not occur in
var
comDenom(
ratio of an unexpanded numerator over an
unexpanded denominator. Such results usually save
even more time, memory, and screen space. Such
partially factored results also make subsequent
operations on the result much faster and much less
likely to exhaust memory.
Even when there is no denominator, the
function is often a fast way to achieve partial
factorization if
memory.
Hint: Enter this
routinely try it as an alternative to
and
factor()
conj()
MATH/Complex menu
expression1
conj(
) ⇒
list1
conj(
) ⇒
matrix1
conj(
Returns the complex conjugate of the argument.
Note: All undefined variables are treated as real
variables.
CopyVar
CATALOG
var1
CopyVar
Copies the contents of variable
does not exist,
Note:
(! ) when you are copying an expression, list,
matrix, or character string except that no
simplification takes place when using
You must use
variable types such as Pic and GDB variables.
162
returns a reduced
expression1,var
)
. The terms and their factors are
var
as the main variable. Similar powers
var
are collected. There might be some incidental
, this often saves time, memory, and
var
expression1
returns a reduced
expression1,var
)
is too slow or if it exhausts
factor()
function definition and
comden()
.
) ⇒
expression
list
matrix
var2
,
creates it.
CopyVar
is similar to the store instruction
CopyVar
with non-algebraic
CopyVar
comDenom((y^2+y)/(x+1)
^2+y^2+y,x) ¸
comDenom((y^2+y)/(x+1)
^2+y^2+y,y) ¸
,
comDenom(exprn,abc)!comden
(exprn) ¸
comden((y^2+y)/(x+1)^2+y^2+y)
¸
comden(1234x^2ù (y^3ì y)+2468x
comden
ù (y^2ì 1)) ¸
comDenom()
conj(1+2
conj([2,1ì 3
conj(z)
conj(x+
x+y! a ¸
10! x ¸
to If
var1 var2. var2
CopyVar a,b ¸
a! c ¸
DelVar x ¸
b ¸
c ¸
.
CopyVar
Appendix A: Functions and Instructions
1234ø xø (xø y + 2)ø (yñ ì 1)
i
) ¸
i i ,ë 7]) ¸
;ë


i
y)
Done
i
1 ì 2ø

2 1+3ø i

ë 7
i
z
i
x + ë ø y
x + y
10
Done
y + 10
Done
x + y
y + 10