Texas Instruments TI-89 Titanium Short User Manual page 203

Boolean expression
If
block1
Else
block2
EndIf
If
Boolean expression
block1
If
Boolean expression
block1
block1
Boolean expression1
If
block1
Boolean expression2
ElseIf
block2
©
Boolean expressionN
ElseIf
blockN
EndIf
Allows for program branching. If
expression1
Boolean expression1
Boolean expression2
imag()
MATH/Complex menu
expression1
imag(
imag(
the argument.
Note: All undefined variables are treated as real
variables. See also
) ⇒
list1
imag(
Returns a list of the imaginary parts of the
elements.
matrix1
imag(
Returns a matrix of the imaginary parts of the
elements.
Indirection
See
Input
CATALOG
Input
Pauses the program, displays the current Graph
screen, and lets you update variables
rc
(also
positioning the graph cursor.
When you press ¸, the program resumes.
Appendix A: Functions and Instructions
Then
evaluates to true, executes
and then skips .
block2
evaluates to false, skips
but executes .
block2
and can be a single statement.
block2
Then
Then
Then
evaluates to true, executes
evaluates to false, evaluates
, etc.
) ⇒
expression
returns the imaginary part of
expression1
)
.
real()
list
) ⇒
matrix
#()
, page 273.
and q c
for polar coordinate mode) by
Program segment:
©
:If x<0 Then
:
:
:
zero"
:EndIf
©
Program segment:
©
:If choice=1 Then
:
:
:
:
:
Boolean
:
. If
block1
:
:
:EndIf
©
imag(1+2
imag(z) ¸
imag(x+
imag({ë 3,4ë
imag([a,b;
Program segment:
©
xc yc
and
:¦ Get 10 points from the Graph
Screen
:For i,1,10
:
:
:
:EndFor
©
Disp "x is negative"
Else
Disp "x is positive or
Goto option1
ElseIf choice=2 Then
Goto option2
ElseIf choice=3 Then
Goto option3
ElseIf choice=4 Then
Disp "Exiting Program"
Return
i ) ¸
i
y) ¸
i i }) ¸
,
i i
d]) ¸
c,
Input
xc! XLIST[i]
yc! YLIST[i]
2
0
y
{0 ë 1 1}
0 0
[ ]
c d
197