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+3i) ¸2
real(z) ¸z
real(x+iy) ¸x
real(list1) ⇒ list
Returns the real parts of all elements.
real({a+iùb,3,i}) ¸{a 3 0}
real(matrix1) ⇒ matrix
Returns the real parts of all elements.
real([a+iùb,3;c,i]) ¸[a 3
c 0]
4Rect MATH/Matrix/Vector ops menu
vector 4Rect
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: 4Rect 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 4Polar.
[3,pà4,pà6]4Rect ¸
[3ø
‡
2
4 3ø
‡
2
4 3ø
‡
3
2]
[a,b,c] ¸[aøcos(b)øsin(c)
aøsin
(b)
øsin
(
c
)
aøcos
(
c
)]
complexValue 4Rect
Displays complexValue in rectangular form
a+bi. The complexValue can have any complex
form. However, an reiq entry causes an error
in Degree angle mode.
Note: You must use parentheses for an (rq)
polar entry.
In Radian angle mode:
4e^(p/3)4Rect ¸4øe
p
3
(4p/3)4Rect ¸2+2ø3øi
In Degree angle mode:
(460)4Rect ¸2+2ø3øi
Note: To type 4Rect from the keyboard,
press 2 for the 4 operator. To type ,
press 2’.