To calculate the reciprocal of a numerical value you can use
Example: calculate the reciprocal of 13. Must be in Run Mode
1 [/] 13 [EXE] result is 0.07692307692 or
13 [EXE] to have 13 in Ans memory (displayed) and [SHIFT][ ) ] [X to -1] [EXE].
For such a simple number as 13, calculating its reciprocal the second way seems ridiculous, but if the number is already displayed the second method is the only efficient one if you do not want to copy the result on a piece of paper and retype so as to calculate its reciprocal.
I thought I answered all aspects of your question. What have I missed? Oh! yes, the inverse of 3*3 or 9. For this one, I remember it because it is so easy to remember
1/9=0.11111111.....
If you want to use the calculator for that use the (X^1) shifted key according to the sequence
9 [SHIFT] [ ) ] (X^-1) [EXE] 0.111111111.....
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SOURCE: How to do inverse log on a casio fx 9750g plus
The inverse of a natural logarithm (ln) is the exponetial (e^x). Both share the same physical key [LN] pour ln and [SHIFT] [LN] (e^x) for the exponential.
Syntax is : [ln] 3 [EXE] gives 1.098612289
exponential of 4: [SHIFT][LN] 4 [=] 54.59815003
The inverse of decimmal logarith is raise 10 to a power. Both share tha same physical key [LOG]
log of 6 : [log] 6 [=] result is 0.7781512504
antilog of 0.77: [SHIFT][LOG] 0.77 [=] result is 5.888436554
For more complicated arguments (expressions) it may be a good idea to use parentheses to enclose the arguments of functions.
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