Texas Instruments TITANIUM TI-89 - Manual (Page 855)

Appendix A: Functions and Instructions 855
PowerReg MATH/Statistics/Regressions menu
PowerReg list1 , list2 [ , [ list3 ] [, list4 , list5 ] ]
Calculates the power regression and updates all
the system statistics variables.
All the lists must have equal dimensions except
for
list5 .
list1 represents xlist.
list2 represents ylist.
list3 represents frequency.
list4 represents category codes.
list5 represents category include list.
Note: list1 through list4 must be a variable name
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
list5 does not
have to be a variable name and cannot be c1–
c99.
In function graphing mode:
{1,2,3,4,5,6,7}! L1 ¸
{1 2 3 ... }
{1,2,3,4,3,4,6}! L2 ¸
{1 2 3 ... }
PowerReg L1,L2 ¸ Done
ShowStat ¸
¸
Regeq(x)"y1(x) ¸ Done
NewPlot 1,1,L1,L2 ¸ Done
¥%
Prgm
CATALOG
Prgm
©©©©
EndPrgm
Required instruction that identifies the beginning
of a program. Last line of program must be
EndPrgm .
Program segment:
:prgmname()
:Prgm
:
:EndPrgm
Product (PI)
See
Π
( ), page 908.
product() MATH/List menu
product( list [ , start [ , end ]])
⇒ ⇒ ⇒ ⇒ expression
Returns the product of the elements contained in
list . Start and end are optional. They specify a
range of elements.
product({1,2,3,4}) ¸ 24
product({2,x,y}) ¸ 2ø xø y
product({4,5,8,9},2,3) ¸ 40
product( matrix1 [ , start [ , end ]]) ⇒ ⇒ ⇒ ⇒ matrix
Returns a row vector containing the products of
the elements in the columns of
matrix1 . Start and
end are optional. They specify a range of rows.
product([1,2,3;4,5,6;7,8,9]) ¸
[28 80 162]
product([1,2,3;4,5,6;7,8,9],
1,2) ¸ [4,10,18]
Prompt CATALOG
Prompt var1 [, var2 ] [, var3 ] ...
Displays a prompt on the Program I/O screen for
each variable in the argument list, using the
prompt
var1? . Stores the entered expression in
the corresponding variable.
Prompt must have at least one argument.
Program segment:
©
Prompt A,B,C
©
EndPrgm