Texas Instruments TITANIUM TI-89 - Manual (Page 787)

Appendix A: Functions and Instructions 787
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
@ 2 ˆ Style = 3:Square
„ Zoom = 7:ZoomTrig
ƒ = 2:Save Copy As...
Type = Picture, Variable = PIC1
y2(x) = sin(x)
@ 2 ˆ Style = 3:Square
y1 = no checkmark (F4 to deselect)
„
Zoom = 7:ZoomTrig
@ "
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+2 i ) ¸ 90
In Gradian angle mode:
angle(0+3 i ) ¸ 100
In Radian angle mode:
angle(1+ i ) ¸
p
4
angle(z) ¸
angle(x+ i y) ¸
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}) ¸