Texas Instruments -84 Plus, Manual Book

Page: 602 / 696

Appendix A: Functions and Instructions 599
Pxl-Off(
row
,
column
) Erases pixel at
(
row , column ); 0

row

62
and 0

column

94.
y <
POINTS
5:Pxl-Off(
Pxl-On( row , column ) Draws pixel at ( row , column );
0

row

62 and
0

column

94.
y <
POINTS
4:Pxl-On(
pxl-Test(
row
,
column
) Returns 1 if pixel (
row
,
column ) is on, 0 if it is off;
0

row

62 and
0

column

94.
y <
POINTS
7:pxl-Test(
P
4
Rx(
r
,
q
)
Returns X , given polar
coordinates r and
q
or a list
of polar coordinates.
y ;
ANGLE
7:P
4
Rx(
P
4
Ry( r ,
q
)
Returns Y , given polar
coordinates
r
and
q
or a list
of polar coordinates.
y ;
ANGLE
8:P
4
Ry(
QuadReg [
Xlistname
,
Ylistname , freqlist ,
regequ
]
Fits a quadratic regression
model to
Xlistname and
Ylistname
with frequency
freqlist , and stores the
regression equation to
regequ .
…
CALC
5:QuadReg
Function or
Instruction/Arguments
Result
Key or
Keys/Menu or
Screen/Item