Casio fx-570MS - Manual (Page 17)

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Logarithmic Function
Determine the value of log
2
.
• This calculator has two logarithmic functions: log whose base is
e (natural logarithm),
and ln whose base is 10 (common logarithm).
• When the base is something other than that described above, the following formula can
be used to convert the base: When a > 0, b > 0, M > 0 and a b 1, use log
a
M =
(log
b
M)/(log
b
a) for the calculation.
1 .
Enter the COMP Mode.
F 1
2 .
Determine log
2
= (log )/(log 2).
R 128 a \ R 2 =
Result: log
2
= log /log 2 = –7 ]
Example Example
Explanation Explanation
Operation
≠ ≠
1
128
1
128
1
128
1
128
1
128