Texas Instruments TI-73 EXPLORER - Manual (Page 308)

302
Appendix A: Function and Instruction Reference
73A-ENG.DOC AppxA: Function/Instruction Reference, English Julie Hewlett Revised: 07/29/98 1:10 PM Printed:
05/19/99 9:03 AM Page 302 of 36
pxl-Test( row,column )
2
P O I N T S
Returns
1
if pixel at (row, column) is on; returns
0
if it
is off; 0row62, and 0column94.
Pxl-On(10,75) b
Done
pxl-Test(10,75) b 1
QuadReg [XList,YList , freq,Y
n
]
- v C A L C
Fits the second-degree polynomial (y=ax +bx+c) to
XList and YList with frequency list, freq, and stores
the regression equation to Y
n
. XList, YList, and freq
(if specified) must have the same number of elements.
freq is the frequency of occurrence for each
corresponding data point in XList. If freq is omitted,
all values are used once.
Defaults for XList and YList are
L 1
and
L 2
.
Decimal mode set to 2:
{1,3,4,5,5,7,8,9}ÜL 3 b Done
{1,4,2,3,4,6,7,9}ÜL 4 b Done
QuadReg L 3 ,L 4 ,Y b
Select ZStandard.
Radian
† .
Sets the
Radian
Angle mode setting. Interprets angles
as radians.
In Radian mode:
sin(90) b .8939966636
sin(pà2) b 1
rand
seed X rand
1 P R B
Generates a random number between
0
and
1
. By
storing an integer seed value (default=0) to
rand
, you
can control a random number sequence.
0Ürand b 0
rand b .9435974025
rand b .908318861
1Ürand b 1
rand b .7455607728
rand b .8559005971
randInt( lower,upper[,#ofIntegers] )
1 P R B
Generates a random integer between lower and upper
(both integers) boundaries. To generate more than
one random integer, specify #ofIntegers, a positive
whole number>0.
(Results may vary.)
randInt(1,10) b 3
randInt(1,10,3) b
{3 5 7}
RecallPic number
2 S T O
Displays the current graph and superimposes
Pic
number on it. number can be
1 (Pic1), 2 (Pic2),
or
3 (Pic3).
Line(0,0,6,6) b
StorePic 2 b Done
RecallPic 2 b
(Pic2 displayed)