Texas Instruments PLUS TI-89 - Manual (Page 432)

Appendix A: Functions and Instructions 415
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 415 of 132
AndPic CATALOG
AndPic picVar [, row, column]
Displays the Graph screen and logically
“ANDS” the picture stored in
picVar and the
current graph screen at pixel coordinates
(row, column) .
picVar must be a picture type.
Default coordinates are (0,0), which is the
upper left corner of the screen.
In function graphing mode and Y= Editor:
y1(x) = cos(x) C
TI-89: 2 ˆ Style = 3:Square
TI-92 Plus: ˆ Style = 3:Square
„ Zoom = 7:ZoomTrig
ƒ = 2:Save Copy As...
Type = Picture, Variable = PIC1
y2(x) = sin(x)
TI-89: 2 ˆ Style = 3:Square
TI-92 Plus: ˆ Style = 3:Square
y1 = no checkmark (F4 to
deselect)
„ Zoom = 7:ZoomTrig
TI-89: "
TI-92 Plus: ¥"
AndPic PIC1 ¸ Done
angle() MATH/Complex menu
angle( expression1 ) ⇒ expression
Returns the angle of expression1 , interpreting
expression1 as a complex number.
Note: All undefined variables are treated as
real variables.
In Degree angle mode:
angle(0+2i) ¸ 90
In Radian angle mode:
angle(1+i) ¸
p
4
angle(z) ¸
angle(x+ iy) ¸
angle( list1 ) ⇒ list
angle( matrix1 ) ⇒
matrix
Returns a list or matrix of angles of the
elements in
list1 or matrix1 , interpreting each
element as a complex number that
represents a two-dimensional rectangular
coordinate point.
In Radian angle mode:
angle({1+2i,3+0i,0ì4i}) ¸