How can i solve integrals with ALGEBRA FX 2.0 PLUS

Read the manual:
http://support.casio.com/storage/en/manual/pdf/EN/004/fx-115_991ES_PLUS_C_EN.pdf

http://support.casio.com/storage/en/manual/pdf/EN/004/fx-115_991ES_PLUS_C_EN.pdf

The Gamma function reduces to the factorial function if the argument is a positive integer. For this case see the screen capture.

For the true Gamma function with real argument, you might want to generate a table of values by using the general definition as an integral



This is taken from Wolfram Mathematica site
Gamma Function from Wolfram MathWorld
where you can find other expressions you might want to play with.

Some calculators that have a CAS (computer Algebra System) are the following
TI Nspire CAS, TI CX CAS, TI92 and TI 92 PLus, TI 89 Titanium, TI Voyage 200 PLT.
Casio FX Algebra 2.0 PLus, Casio ClassPad 330, 330 PLus, 400
HP 48 G, G+, GX, 49 G+, 50 G

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

Unfortunately, the Casio FX-9860 G does not have a Computer Algebra System or CAS. For this reason it can only calculate definte integral over a given interval. The lower and upper limits must be supplied. The result will be a number.
Casio calculators that have a CAS are the Casio ClassPad CP330/ 300Plus/ 330, or the Algebra FX 2.0.

In answering your other question I did make a mistake: I looked at the wrong version of the manual. The Algebra FX 2 Plus does solve for eigenvalues. Under the CAS. Here is a screen capture to help you.

I checked the manual for the ALGEBRA FX2.0 PLUS looking for that type of error. It is not listed. Maybe you are talking about another calculator?
Here is the link to the appendix of the manual. Part1 lists the error messages.
You can always try to reset the calculator by pressing the RESET button at the back, or use the menu icon System or Memory.

Only FX 2 Plus can calculate Eigenvalue and Eigenvector
On main menu num 9 (CAS)
OPTN-MAT-CALC-EigVl or EigVc

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).

Hello,
The Algebra FX 2.0 does matrix operations. The relevant chapters in the manual are Chapter 2 and Chapter 8.Here is the link.

Hope it helps.