# How to store formula in scientific calculator(orpat fx 5400 m)

Posted by on

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Posted on Jan 02, 2017

There are plenty of casio 991 manuals here. Take your pick!
http://safemanuals.com/zearch_160.php

Dom't forget to leave feedback if it solves your problem. 'fixya'!

Posted on May 01, 2008

SOURCE: Reset?!

Thank You so very much, this solution fixed my problem.

Posted on Feb 13, 2009

how to solve F(s)=s+6/s(s*s+4s+3) on casio fx991es

Posted on Mar 26, 2009

SOURCE: standard deviation

standard deviation

calculate mean of a data set:

1. Turn calc. on or press MODE SeTUP
2.Press 3 for STAT
3. Press 1 for VAR
4.Enter values for X column
5. WHen done entering press SHIFT 1
6.Press 5
7.Press 2 to calculate the mean
8.Press =

Posted on Sep 19, 2009

Hi,
Sorry to disappoint you: This calculator is not programmable.

Good luck.

Posted on Nov 30, 2009

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## Related Questions:

### On Casio FX-115ES Plus Calculator, what buttons do I push to do compound interestsemiannually for 15 years?

There is no such button. You must figure out the formula and enter it, giving the appropriate value for the annual interest and the number of years (15).

Sep 27, 2014 | Casio fx-115ES Plus Scientific Calculator

### My casio FX 991ES is giving formula answers, to a calculation using a large exponent number in a formula answer, I need it to tell me a long number instead. Sum is 6.7 x 1018. The answer I get is 6.7x1018,...

Your answer is 6.7*10^18. That requires 19 places on the display: There are not enough places to write that. Besides, calculators are deigned to use Scientific Notation whenever the result to be displayed is too large or too small.
If you enjoy writing zeros, convert by hand the scientific notation into what you call long number.

Jul 09, 2014 | Casio Brand New-Fx-991es Plus - Scientific...

You can do it the same way people did it before calculators were invented. Just use the quadratic formula: http://en.wikipedia.org/wiki/Quadratic_formula, and let the calculator handle the arithmetic. Some sophisticated calculators have generalized equation solvers that can handle equations much more complicated than the quadratic, but the fx-82 isn't one of them.

Nov 06, 2013 | Casio FX82MS Scientific Calculator

### Save equation fx 991es

In table Mode you can enter the formula for a function and generate a table of values. For a 991ES Plus you can enter two functions. However if you change MODE everything will be erased.
In EQN (equation) there is a certain number of built in formula types you can choose. You will be asked for the coefficients which will be used to solve the equation selected. However if you change MODE your lose what you entered. So basically you cannot save formulas to use as a memory aid (if that is what your intention is.) Sorry.

Jul 19, 2013 | Casio FX991ES Scientific Calculator

### How I can memorize my own formula (expression) in memory of FX 991 ES for using in future, step by step ?

Sorry, but you cannot.
You can type in a formula that involves the memory variables X,Y, A, B,C,D, E, =, . Such a formula is meant to be evaluated to get a solution (X by default). Once you type the formula you press the Shifted function SOLVE and you will be prompted for the constants, for Y etc. when you press the EXE/= key you get the value of X.
If you turn off the calculator or change the calculation MODE, it is wiped out of memory.

To make a long story short, you cannot STORE formulas in the calculator. Better try to memorize them (commit then to YOUR OWN memory).

May 22, 2011 | Casio FX-115ES Scientific Calculator

### What calculator would you recommend for polar and rectangular formula's?

Are you serious?
No calculator purchase should be solely based on such a trivial matter.
But if you are looking for a very good scientific calculator, I would suggest the new Write View EL-W506/W516/W546 calculators by Sharp, or the FX-115ES/991ES Natural Display by Casio.

With these calculators you can see what you enter displayed as in textbooks. Naturally, they all do coordinates conversions from Polar to Rectangular and from Rectangular to Polar.

Jun 17, 2010 | Casio FX-115ES Scientific Calculator

### Does anyone know how to calculate derivatives using the casio fx-115es? For example: find the derivative of f(x)= 3x^3=3x. Thank you!

hello,
The calculator will calculate the derivative at a point. It will not give you the formula for the derivative, just the derivative at the point you choose.
Sorry, it can ONLY do NUMERICAL differentiations and integrations.

Oct 21, 2009 | Casio FX-115ES Scientific Calculator

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