Texas Instruments PLUS TI-89 - Manual (Page 506)

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+iù b,3,i}) ¸ {a 3 0}
real( matrix1 ) ⇒ matrix
Returns the real parts of all elements.
real([a+iù 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 ¸
[
3ш ‡2
4
3ш ‡2
4
3ш ‡3
2
]
[a, b,c] ¸ [aø cos(b)ø sin(c)
aø sin(b)ø sin(c) aø cos(c)]
complexValue 4 Rect
Displays complexValue in rectangular form
a+bi. The complexValue can have any complex
form. However, an re 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:
4e^( p/3)4Rect ¸ 4øe
p
3
(4 p/3)4Rect ¸ 2+2ш 3 шi
In Degree angle mode:
(4 60)4Rect ¸ 2+2ш 3 шi
Note: To type 4 Rect from the keyboard,
press 2 Ž for the 4 operator. To type ,
press 2 ’ .