Question about Casio FX-300MS Calculator

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Fx-83es i am having trouble finding the 'INV' button. in my revision guide it says to use it but i cant find it anywhere. there is an 'In' button but when i try and use that in my equation it doesnt give the answer the book has given. i have git my exam tommorow and really need 2 no.??

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  • 27 Answers

Try 1/x button, does that give you the correct answer ? guessing the inverse ?

Posted on Jun 01, 2008

  • Mikey1963
    Mikey1963 Jun 01, 2008

    sorry on that model it is the X-1 key

    eg enter 1/10 as fraction using the a Ab/c button, press = then press the X-1 key then = again to change to answer from 1/10 to 10

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1 Answer

How to calculate inv logs on casio fx-82 au plus?


The inverse of log functions are power functions.
Inv of ln is exponential (e^x)
Inv of log in base 10 is 10^(x)
A function and its inverse usually share the same physical key. One function is accessed directly, the other by using the SHIFT or 2ndF key.

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Aug 18, 2014 | Casio Office Equipment & Supplies

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CASIO fx-83es


Hello,
Press [SHIFT][AC] (ON).
Hope it helps.

Oct 20, 2009 | Casio fx-300ES Calculator

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I am having trouble simplifying ratios on the FX-83ES. Any ideas? For example 10:5 should come up with 2:1, but it comes up with 10 when I press =.


am having trouble simplifying... Solve I am having trouble simplifying ratios on the FX-83ES. Any ideas? For example 10:5 should come up... (More) I am having trouble simplifying ratios on the FX-83ES. Any ideas? For example 10:5 should come up with 2:1, but it comes up with 10 when I press =.

Sep 13, 2009 | Casio FX-300MS Calculator

1 Answer

How do i find inv for sin,i have tried the mode Deg 1 but i keep getting the wrong answer. can you help? Eg 0.6339869 INV cos ans should be 50.655113.


You didn't specify what calculator you have.

On my TI30XA, 0.6339869 '2nd' 'COS-1' gives 50.655114
On my Windows XP calculator, 0.6339869 'Inv' 'cos' gives 50.655114
On a Casio FX-300ES, 0.6339869 'Shift' 'cos-1'

I hope one of these helps. If not, let me know what calculator you have and I'll figure it out.

Sep 08, 2009 | Office Equipment & Supplies

3 Answers

Any way to make decimal answers the default? (casio fx-83ES)


you want a line output

Shift > Mode > 2:LineIO or on the graphics one its sometimes 10:LineO etc.

look for something with line in it

Steve :P

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2 Answers

I cant find the EXP or ee button on my casio


the EXP button is the one that says 'x10' next to the 'Ans' key at the bottom.

May 01, 2009 | Casio fx-300ES Calculator

2 Answers

Casio fx-83ES


Press Shift and then In 

Dec 08, 2008 | Casio fx-300ES Calculator

2 Answers

EXP or ee button i cannot find


x10 to the power of x is the EXP button, just press this and then the number it is to the power of!

Nov 20, 2008 | Casio fx-300ES Calculator

10 Answers

Casio fx-83ES


there is a button SD close to AC button, standard - decimal try it .......or
shift+mode format math IO, change it to the other option

Jan 02, 2008 | Casio fx-300ES Calculator

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