Texas Instruments TI-89 Titanium Short User Manual page 209

ln()
@
2 x key
expression1
ln(
) ⇒
list1
ln(
Returns the natural logarithm of the argument.
For a list, returns the natural logarithms of the
elements.
squareMatrix1
ln(
Returns the matrix natural logarithm of
squareMatrix1
the natural logarithm of each element. For
information about the calculation method, refer
to
cos()
squareMatrix1
always contains floating-point numbers.
LnReg
MATH/Statistics/Regressions menu
list1 list2
LnReg ,
Calculates the logarithmic regression and updates
all the system statistics variables.
All the lists must have equal dimensions except
for
list5
represents xlist.
list1
represents ylist.
list2
represents frequency.
list3
list4 represents category codes.
represents category include list.
list5
Note:
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
have to be a variable name and cannot be c1–
c99.
Appendix A: Functions and Instructions
H
x key
) ⇒
expression
list
) ⇒
squareMatrix
not
. This is the same as calculating
on.
must be diagonalizable. The result
[ ]
list3 list4 list5
, [ ] [, , ]
.
through must be a variable name
list1 list4
ln(2.0) ¸
If complex format mode is
ln({ë 3,1.2,5}) ¸
If complex format mode is
ln({ë 3,1.2,5}) ¸
In Radian angle mode and Rectangular
complex format mode:
ln([1,5,3;4,2,1;6,ë 2,1]) ¸

1.831...+1.734...øi .009...ì 1.490...øi

.448...ì.725...øi

ë.266...ì 2.083...øi 1.124...+1.790...øi ...
In function graphing mode:
{1,2,3,4,5,6,7,8}! L1 ¸
{1,2,2,3,3,3,4,4}! L2 ¸
LnReg L1,L2 ¸
ShowStat ¸
does not
list5
¸
Regeq(x)"y1(x) ¸
NewPlot 1,1,L1,L2 ¸
¥ %
REAL
Error: Non-real result
RECTANGULAR
i
{ln(3) + pø .182
1.064...+.623øi
...
.693
:
:
... ln(5)}

...

...

...
{1 2 3 }
...
{1 2 2 }
Done
Done
Done
203