838
Appendix A: Functions and Instructions
log()
CATALOG
log(
expression1[,expression2]
)
⇒
expression
log
(
list1[,expression2]
)
⇒
list
Returns the base-
expression2
logarithm of the
argument.
For a list, returns the base-
expression2
logarithm of
the elements.
If expression 2 is omitted, 10 is used.
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
.079
...
ln(5)
ln(10)
}
log(
squareMatrix1
)
⇒
⇒
⇒
⇒
squareMatrix
Returns the matrix base-
expression2
logarithm of
squareMatrix1
. This is
not
the same as calculating
the base-
expression2
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
.003…
ì
.647…
ø
i
…
.194…
ì
.315…
ø
i
.462…+.270
ø
i
…
ë
.115…
ì
.904…
ø
i
.488…+.777…
ø
i
…
log(
x,b
)
⇒
⇒
⇒
⇒
expression
log(
squareMatrix1
)
⇒
⇒
⇒
⇒
squareMatrix
In a list, returns the base-
expression2
logarithm of the
elements.
Log(10,3) – log(5,3)
¸
Log
3
(2)
Log(2.0,4)
¸
.5
4444
logbase
MATH/String menu
expression
4444
logbase(
expression1
)
⇒
⇒
⇒
⇒
expression
Causes the input expression to be
simplified to an expression using base
expression1.
Log(10,3) – log(5,5)
4
logbase(5)
¸
)
3
(
log
)
30
(
log
5
5
Summary of Contents for Voyage 200
Page 36: ...Getting Started 36 D B D B Press Result ...
Page 45: ...Getting Started 45 3 0 D B D D B D Press Result ...
Page 46: ...Getting Started 46 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 60: ...Getting Started 60 B D Press Result ...
Page 139: ...Previews 139 8 Complete the operation Press 2 d Steps and keystrokes Display 5 f 2 ...
Page 453: ...Differential Equation Graphing 453 ...
Page 468: ...Tables 468 ...
Page 777: ...Activities 777 ...
