Owner's Manual

Appendix A: Categorical Listing of Operations 835
log() CATALOG
log( expression1 ) ⇒
⇒⇒
⇒ expression
log(
list1 ) ⇒
⇒⇒
⇒ list
Returns the base-10 logarithm of the argument.
For a list, returns the base-10 logs of the
elements.
log(2.0) ¸ .301...
If complex format mode is REAL:
log({ë 3,1.2,5}) ¸
Error: Non-real result
If complex format mode is RECTANGULAR:
log({ë 3,1.2,5}) ¸
{
ln(3)
ln(10)
+
p
ln(10)
ø i
ii
i .079...
ln(5)
ln(10)
}
log( squareMatrix1 ) ⇒
⇒⇒
⇒ squareMatrix
Returns the matrix base-10 logarithm of
squareMatrix1 . This is not the same as calculating
the base-10 logarithm of each element. For
information about the calculation method, refer
to
cos().
squareMatrix1 must be diagonalizable. The result
always contains floating-point numbers.
In Radian angle mode and Rectangular
complex format mode:
log([1,5,3;4,2,1;6,ë 2,1]) ¸
⎣
⎣⎣
⎣
⎢
⎢⎢
⎢
⎡
⎡⎡
⎡
⎦
⎦⎦
⎦
⎥
⎥⎥
⎥
⎤
⎤⎤
⎤
.795…+.753…ø i
ii
i .003…ì.647…ø i
ii
i …
.194…ì.315…ø
i
ii
i .462…+.270ø i
ii
i …
ë.115…ì.904…ø
i
ii
i .488…+.777…ø i
ii
i …
Logistic MATH/Statistics/Regressions menu
Logistic list1 , list2 [ , [ iterations ] , [ list3 ] [, list4 , list5 ] ]
Calculates the logistic 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.
iterations specifies the maximum number of times
a solution will be attempted. If omitted, 64 is
used. Typically, larger values result in better
accuracy but longer execution times, and vice
versa.
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}! L1 ¸ {1 2 3 …}
{1,1.3,2.5,3.5,4.5,4.8}! L2
¸
{1 1.3 2.5 …}
Logistic L1,L2 ¸ Done
ShowStat ¸
¸
regeq(x)! y1(x) ¸ Done
NewPlot 1,1,L1,L2 ¸ Done
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