Question about Casio FX991ES Scientific Calculator

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Posted on Jan 02, 2017

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SOURCE: how to calculate log value in calculator with different base value

In any scientific calculator log2(n) can be calculated with either ln or log function as
follows

Log2(n)= ln(n) / ln(2)

Or

Log2(n)=log(n) / log(2)

both will give nearly the same answers

Posted on Apr 24, 2009

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SOURCE: Inputing factors on a casio fx-115es calculator

Unless I am failing to understand your problem, just combine like terms to get:

9x^2+2x+4 and then enter those coefficients into the quadratic solver.

That will get you the two answers -- both of them will be complex.

If you wanted to turn those two answers into factors (complex) of the original equation simply

change the signs on each and put an x in front.

Of course, the quadratic formula would also work.

CG

Posted on Apr 28, 2009

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 a large factorial using casio

Hello,

There is a function to calculate them for you.

In CAS, or Algebra or Tutor Modes, use the x! option

In Run-Math, press [OPTN][F6] to pan right, then [F1] to access the (PROB) menu then enter option number corresponding to x!

The way it works is as follows

number ! [EXE].

Due to memory limitations, you can calculate factorials of numbers up to 69.

Hope it helps.

Posted on Nov 13, 2009

Testimonial: *"Thanks. Ended up finding it after searching around for 20 minutes. Appreciate the help though!"*

SOURCE: how can we do linear interpolation in casio fx-991ES calculator

how solve interpolation by casio fx 991 ex

Posted on Nov 28, 2010

https://www.youtube.com/watch?v=rCVM6RWMjQ4

Jan 7, 2015 - Uploaded by Yabets Jab

In this video you can simply understand how to find a value of a given missing number in a table on Casio fx ...Missing: 4800p

https://www.youtube.com/watch?v=OGmHagjZPjg

Oct 31, 2012 - Uploaded by cpobyrne1

How to perform a linear regression on a Casio scientific calculator. Example uses a ... A Casio fx-83WA calculator is used for the demonstration. .... Lagrange Interpolation Easily Explained on Casio fx-991ES Calculator!Missing: 4800p

Jan 05, 2016 | Casio Office Equipment & Supplies

Casiodisplay format (Disp) settings while the calculator is in the BASE ... Be sure to checkthe current calculation mode (SD, REG,. COMP ... Use [ and ] to display the expression 4 + 4. Press A ... want to perform scientific function calculations. COMP .

Dec 03, 2015 | Casio Office Equipment & Supplies

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...

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

If it does not have the FACT key, you must factor by hand: Divide by 2, then by 3, 5, 7 etc.

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

why cant they include infinity symbol ? sometimes i feel my calculator is so dumb !

Nov 16, 2012 | Casio Brand New-Fx-991es Plus - Scientific...

No it cannot factor. It does not do symbolic manipulations.If you know a bit of theory of polynomials you can find the roots of the polynomial equation. The calculator has a Solve utility. Once you have the roots, you can use your knowledge about polynomials to carry out the factorization procedure.

Aug 31, 2011 | Casio fx-300ES Calculator

Hi,

Turn calculator ON. Press [SHIFT] [9] (CLR) and select

Hope it helps.

Thank you for using FixYa and for rating this solution.

Turn calculator ON. Press [SHIFT] [9] (CLR) and select

- Setup,
- Memory, and
- All.
- Then press [=] to execute the reset.

Hope it helps.

Thank you for using FixYa and for rating this solution.

Dec 01, 2009 | Casio fx-300ES Calculator

log0.4075=nlog0.85

Feb 19, 2009 | Sharp EL-733A Calculator

Since you're looking for so much, it sounds like you do not have the users manual for the calculator. You can download it here:

http://safemanuals.com/user-guide-instructions-owner-manual/CASIO/FX-270W%20PLUS-_E

John

http://safemanuals.com/user-guide-instructions-owner-manual/CASIO/FX-270W%20PLUS-_E

John

Jan 19, 2009 | Office Equipment & Supplies

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