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Logarithm and exponential functions
DC(multi-tap keys)
D yields the logarithm of a number to the base e
(e ≈ 2.718281828459).
DD yields the common logarithm of a number.
C raises e to the power you specify.
CC raises 10 to the power you specify.
Examples
Numeric derivative
%A
%A calculates an approximate derivative of
expression with respect to variable, given the value at
which to calculate the derivative and H (if not specified, the
default is 1
EM3). This function is valid only for real numbers.
LOG DD1 ) <
LN D 5 ) V 2 <
10
›
-
CCDD
2 ) <
DDCC
5 " ) <
e
›
-
C .5 <
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