Question about Texas Instruments TI-84 Plus Calculator

# Integration with limits & with out limits

Hii i have the model CASIO fx- 991 ES & in that
1. I need to perform the integration. say for example integration of log(X), For this if i don't want to specify the limits then how should i give the expression because without specifying the limits it is giving syntax error.

2. The second one is if i need to specify the limit as 0 to infinity or -infinity to infinity then how could it be possible in this model?

Looking forward for the positive reply.

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Hello,
This calculator can only perform NUMERICAL DEFINITE integrals. Which meansyou have to supply the numerical value of the lower limit and the numerical value of the upper limit. The result is a numerical value.
The calculator cannot perform symbolic calculus.

If the function is simple you find the integral in tables of integrals where you will see that INT(log(X)dx=x(log(x)+1). Some calculators that have a CAS (computer algebra system) can manipulate symbolic expression, but not theCasio FX-991ES.

You ask it the value of the integral of log(X) from X=1 to X=3 and it will give you 0.5627748004

Hope it helps

Posted on Sep 06, 2009

• k24674 Sep 06, 2009

As to representing infinity, no way can you do that on this calculator. Only CAS calculators can manipulate infinity.

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Dx/(1-sin(x)+cos(x))

Posted on Mar 02, 2009

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## Related Questions:

### HOW to solve integration on casio fx-991es

The fx-991ES does not do indefinite integrals.

For definite integrals, use the [integral] key just below and left of the big round cursor pad. For example, to calculate the definite integral of x^2 dx from 0 to 1, press [integral] [alpha] [X] [cursor-right] [0] [cursor-right] [1] [=]. After about a second you should see 1/3.

Dec 20, 2014 | Casio Office Equipment & Supplies

### Which model of casio csn do integration in limits

The Casios FX-115 ES , FX-115 ES PLus, FX-991 ES, FX-991 ES Plus C can perfom numerical differentiation at a point, and numerical integration between two given limits.

Aug 12, 2013 | Casio FX991ES Scientific Calculator

### Please is there any calculator by model fx 911 ES

Casio has a scientific calculator with Model FX-991 ES. It is sold in North America, and maybe in other continents. You can find it at Staples/ Bureau en Gros stores for around 29 CAD.

Sep 06, 2011 | Casio FX-115ES Scientific Calculator

### How to calculate inverse of the matrix with 991 ES calculator ?

Press SHIFT [MATRIX], specify the matrix to be inverted, then x^-1.

Example #103 in the appendix shows the exact procedure for inverting the matrix entered in example #096. If you need the manual and the appendix, you can download them from
http://support.casio.com/manualfile.php?rgn=1&cid=004001004

May 09, 2011 | Casio FX-115ES Scientific Calculator

### How to interpolate in CASIO fx 991 ES

its simple
press mode
3;stat
2;A+Bx
l x l y l
l 2 l 4.6 l
l 4 l 5.9 l
press; AC
press;5.9
press; shift
press;1
press;7 (reg)
press;5 (comma)
press;=
u will get ans

Feb 08, 2011 | Casio FX-115ES Scientific Calculator

### Can the casio fx9750gplus calculator show differentiation/integration etc. for example differentiate 5x^3 and have it show 15x^2?

Sorry to disappoint you but the Casio FX-9750Gplus does not handle symbolic calculations. It does not have a Computer Algebra System or CAS. It can however calculate the numerical integration of a function between two limits, as well as the first and second derivatives of a function at a given point.

1. To access the numerical integration and differentiation,
2. Press the Menu button.
3. Highlight the RUN icon and press [ENTER/EXE]
4. Press [OPTN][F4:CALC]. Then
• Press [F2:d/dx] for first derivative
• Press [F3:d^2/dx^2 for second derivative,
• or [F4:integral]

Nov 01, 2010 | Casio FX-9750GPlus Calculator

### Steps to draw graphs using Fx 991 ES Plus calculator.

Hello,

There are many different functions...

You can download the entire manual after answering a few questions at www.safemanuals.com

after using the dropdown menu for this make and model.

Good Luck!

Oct 18, 2010 | Casio FX-115ES Scientific Calculator

### Can i calculate calculus using fx-991ms

If you want to get an answer like 1/2X for d/dx(X^2), you will have to purchase a CAS calculator like Casio's Algebra FX-2 or Classpad. TI series calculators also have CAS.
However, you can calculate the numerical values of derivatives and integrals only.
To calculate the value of a proper integral:

1. Press the 'ON' key;
2. Press the Integral key ;
3. Enter your expression (example X^2+X-3 etc);
4. Press the 'comma' key after your expression;
5. Input the first limit after comma, input comma again after first limit;
6. Close brackets;
7. Press the equals key, display may return after a while with the answer.
for eg to calculate xdx from 0 to 2, input as follows:

dx(X,0,2)

To calculate derivative at a point:

1. Press Shift and then the integration key.
2. Enter your function;
3. Input comma;
4. input the point at which you want to evaluate the derivative;
5. Close bracket and press enter.
Example, to calculate d/dx X^2 at 3 input:

SHIFT+dx key X^2,3)

Display looks like this: d/dx(X^2,3).

Oct 23, 2009 | Casio FX-300MS Calculator

### Unable to use the integration function

First you have to computational mode to [MODE][1:Comp]. Then press [SHIFT][MODE][1:MthIO].
Press the Integral, a template with the distinctive Integral (Snake) sign appears, with two small rectangles for the limits, a larger rectangle for the function, and dx.
The cursor will be blinking in the large level-line rectangle. Enter your function using the [ALPHA] [Letter] combinations to enter X,Y,A,B,C,or D, then use the Down Arrow to enter the lower limit, then the Up Arrow for the upper limits.
After you finish press the [=] to get the numerical result.
You cannot obtain primitives, just numerical values.

Mar 30, 2009 | Casio FX-115ES Scientific Calculator

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