Using mathematical functions
11-9
TANH
Hyperbolic tangent.
TANH
(
value
)
ALOG
Antilogarithm (exponential). This is more accurate than
10^x
due to limitations of the power function.
ALOG
(
value
)
EXP
Natural exponential. This is more accurate than
due
to limitations of the power function.
EXP
(
value
)
EXPM1
Exponent minus 1 :
. This is more accurate than
EXP when
x
is close to zero.
EXPM1
(
value
)
LNP1
Natural log plus 1 : ln(
x+1
). This is more accurate than
the natural logarithm function when
x
is close to zero.
LNP1
(
value
)
List functions
These functions work on list data. See “List functions” on
page 14-6.
Loop functions
The loop functions display a result after evaluating an
expression a given number of times.
ITERATE
Repeatedly for
#times
evaluates an
expression
in terms of
variable
. The value for
variable
is updated each time,
starting with
initialvalue.
ITERATE(
expression
,
variable
,
initialvalue
,
#times
)
Example
ITERATE(X
2
,X,2,3)
returns
256
e
x
e
x
1
–
Summary of Contents for 39g+
Page 1: ...hp 39g graphing calculator user s guide H Edition 2 Part Number F2224 90001 ...
Page 62: ...2 22 Aplets and their views 5 Display the functions in numeric form ...
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