Question about Casio Brand New-Fx-991es Plus - Scientific Calculator

On the CASIO fx-83GT PLUS there was a verify mode to check is two things were equal greater than, less than or equal to etc, but i can't find this in gut fx-991ES PLUS :(

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You should try to explore the calculator to find its capabilities. You can also read the manual. Everything is in it.

Press the Mode button, then the down arrow key. On the second page of the mode list you find **2:Verif**

Posted on Mar 23, 2014

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Posted on Jan 02, 2017

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SOURCE: mode change

Hello,

Just so that we know what we are talking about. The natural display is the display mode in which fractions appear on two lines, radicals appear as radicals, log can be calculated in any base, etc. If that is what you understand by Natural Display, we are in agreement.

To set this mode, you turn calculator ON and press [SHIFT][MODE] (setup). The option is called MathIO, and it has the number 1.

Thus [SHIFT][MODE][1:MathIO].

Hope it helps.

Posted on Oct 13, 2009

SOURCE: how can i calculate log inverse with my fx-991ES

By 'log inverse', you presumably mean the inverse of the logarithm function. There are two logarithm functions on most scientific calculators. Firstly [ln], or natural logarithms, to the base e, where the inverse is e^x. Secondly [log], or logarithms to the base 10, where the inverse is 10^x.

Example 1 : ln(2) = 0.69314718 so e^0.69314718 = 2

Example 2: log(2) = 0.301029995 so 10^0.30102995 = 2

Posted on Oct 03, 2011

SOURCE: How to calculate Modular inversion on My Casio

Your calculator cannot perform inverse modulo calculations. To calculate yourself ( with pen and paper) you should consult a book on algebra.

Posted on Aug 22, 2012

SOURCE: how i can get infinity symbol in casio fx-991es plus calculator

You cannot. The calculator does not have a Computer Algebra System or CAS. If you are trying to calculate an integral over an infine interval, you must try some high values to simulate infinity and find a value after which the value of the integral stops changing .

Posted on Nov 18, 2012

Use nCr (the shifted function of the divide key). For example, to find the number of combinations of five things taken three at a time, press 5 SHIFT nCr 3 = and see 10.

May 03, 2014 | Casio FX991ES Scientific Calculator

Press [SHIFT][ division key]. It is marked with nCr.

May 03, 2014 | Casio Brand New-Fx-991es Plus - Scientific...

This is a good scientific calculator that can do a lot, but things in the realm of a CAS (Computer Algebra System) are beyond its capabilities.

Apr 23, 2014 | Casio Brand New-Fx-991es Plus - Scientific...

Sorry, It is not possible to solve equations on the Casio FX-82 ms. Try the Casio FX-115 ES/ FX-115 ES Plus, FX-991ES/ FX-881 ES Plus C.

Oct 29, 2013 | Casio FX82MS Scientific Calculator

The FX-991ES Plus barely handles simple operations on matrices of dimensions up to 3X3. It cannot find eigenvalues or eigenvectors.

Oct 24, 2013 | Casio Brand New-Fx-991es Plus - Scientific...

Sorry to be the carrier of bad news but the Casio FX-83 GT Plus does not
have a baseN calculation mode. You cannot do any arithmetic in binary,
octal or hexadecimal numeration.

Oct 06, 2013 | Casio Office Equipment & Supplies

Sorry to be the carrier of bad news but the Casio FX-83 GT Plus does not have a baseN calculation mode. You cannot do any arithmetic in binary, octal or hexadecimal numeration.

Oct 06, 2013 | Casio Office Equipment & Supplies

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.

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.

Jul 19, 2013 | Casio FX991ES Scientific Calculator

Like many other Casio calculators, the fx-83GT Plus doesn't provide the modulus function. You have to do it the hard way.

To calculate 19 MOD 10 (which is 9, not 10 as you state in your question), first divide 19 by 10 and note the integer portion of the result (in this case, 1). Then subtract from 19 the product of 10 and the result of the first step. The result of the subtraction is the modulus. 19 - (1*10) = 9.

To calculate 19 MOD 10 (which is 9, not 10 as you state in your question), first divide 19 by 10 and note the integer portion of the result (in this case, 1). Then subtract from 19 the product of 10 and the result of the first step. The result of the subtraction is the modulus. 19 - (1*10) = 9.

May 10, 2013 | Office Equipment & Supplies

Hi,

If you cannot find it, buy an FX-991ES. It is solar-powerd and it has the natural text-book display, which is a novelty in calculators.

I know that Staples carry the FX-991ES.

Hope it helps.

If you cannot find it, buy an FX-991ES. It is solar-powerd and it has the natural text-book display, which is a novelty in calculators.

I know that Staples carry the FX-991ES.

Hope it helps.

Nov 27, 2008 | Casio FX-115W Plus Calculator

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