Newplot, Newprob, Nint() – Texas Instruments TITANIUM TI-89 User Manual
Page 847: Appendix a: functions and instructions 847
Appendix A: Functions and Instructions
847
NewPlot
CATALOG
NewPlot
n
,
type
,
xList
[
,
[
yList
], [
frqList
], [
catList
],
[
includeCatList
], [
mark
] [,
bucketSize
]]
Creates a new plot definition for plot number
n
.
type
specifies the type of the graph plot.
1 = scatter plot
2 = xyline plot
3 = box plot
4 = histogram
5 = modified box plot
mark
specifies the display type of the mark.
1 = è (box)
2 = × (cross)
3 = + (plus )
4 = é (square)
5 = ø (dot)
bucketSize
is the width of each histogram
“bucket” (
type
= 4), and will vary based on the
window variables
xmin
and
xmax
.
bucketSize
must
be >0. Default = 1.
Note:
n
can be 1–9. Lists must be variable names
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor), except for
includeCatList
, which does not have to be a
variable name and cannot be c1–c99.
FnOff
¸
Done
PlotsOff
¸
Done
{1,2,3,4}!L1
¸
{1 2 3 4}
{2,3,4,5}!L2
¸
{2 3 4 5}
NewPlot 1,1,L1,L2,,,,4
¸
Done
Press ¥ % to display:
NewProb
CATALOG
NewProb
Performs a variety of operations that let you
begin a new problem from a cleared state
without resetting the memory.
•
Clears all single-character variable names
(
Clear a–z
) in the current folder, unless the
variables are locked or archived.
•
Turns off all functions and stat plots (
FnOff
and
PlotsOff
) in the current graphing mode.
•
Perfoms
ClrDraw
,
ClrErr
,
ClrGraph
,
ClrHome
,
ClrIO
, and
ClrTable
.
NewProb ¸ Done
nInt()
MATH/Calculus menu
nInt(
expression1, var, lower, upper
)
⇒
⇒
⇒
⇒
expression
If the integrand
expression1
contains no variable
other than
var
, and if
lower
and
upper
are
constants, positive
ˆ, or negative ˆ, then
nInt()
returns an approximation of
‰
(
expression1
,
var
,
lower
,
upper
)
. This approximation is a weighted
average of some sample values of the integrand
in the interval
lower . nInt( e ^(ë x^2),x,ë 1,1) ¸ 1.493 ... The goal is six significant digits. The adaptive A warning is displayed ( “Questionable accuracy”) when it seems that the goal has not been achieved. nInt(cos(x),x,ë p,p+1н л 12) ¸ л 1.041 ... н л 12 ‰ (cos(x),x,ë p,p+10^(л 12)) ¸ л sin( 1 1000000000000) ans(1)¥ ¸ л 1.н л 12
algorithm terminates when it seems likely that
the goal has been achieved, or when it seems
unlikely that additional samples will yield a
worthwhile improvement.