Calculator User Manual

Appendix A: Functions and Instructions 489
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 489 of 132
RclPic
CATALOG
RclPic
picVar
[
,
row
,
column
]
Displays the Graph screen and adds the
picture stored in
picVar
at the upper left-hand
corner pixel coordinates (
row
,
column
) using
OR logic.
picVar
must be a picture data type.
Default coordinates are (0, 0).
real()
MATH/Complex menu
real(
expression1
)
⇒
expression
Returns the real part of the argument.
Note: All undefined variables are treated as
real variables. See also
imag()
.
real(2+3
i
)
¸
2
real(z)
¸
z
real(x+
i
y)
¸
x
real(
list1
)
⇒
list
Returns the real parts of all elements.
real({a+
i
ù
b,3,
i
})
¸
{a 3 0}
real(
matrix1
)
⇒
matrix
Returns the real parts of all elements.
real([a+
i
ù
b,3;c,
i
])
¸
[
a 3
c 0
]
4
Rect
MATH/Matrix/Vector ops menu
vector
4
Rect
Displays
vector
in rectangular form [x, y, z].
The vector must be of dimension 2 or 3 and
can be a row or a column.
Note:
4
Rect
is a display-format instruction,
not a conversion function. You can use it
only at the end of an entry line, and it does
not update
ans
.
Note: See also
4
Polar
.
[3,pà4,pà6]4Rect
¸
[
3
ø
‡
2
4
3
ø
‡
2
4
3
ø
‡
3
2
]
[a,b,c]
¸
[a
ø
cos(b)
ø
sin(c)
a
ø
sin
(b)
ø
sin
(
c
)
a
ø
cos
(
c
)]
complexValue
4
Rect
Displays
complexValue
in rectangular form
a+bi. The
complexValue
can have any complex
form. However, an r
e
i
q
entry causes an error
in Degree angle mode.
Note: You must use parentheses for an (r
q
)
polar entry.
In Radian angle mode:
4
e
^(p/3)4Rect
¸
4
ø
e
p
3
(4p/3)4Rect
¸
2+2
ø
3
ø
i
In Degree angle mode:
(460)4Rect
¸
2+2
ø
3
ø
i
Note: To type
4
Rect
from the keyboard,
press
2

for the
4
operator. To type

,
press
2
’
.