Question about Casio FX-115ES Scientific Calculator

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Hello

First you must set Matrix calculation

[MODE][6:Matrix]. Then By entering one of the numbers [1:MatA] or
[2:Matb] or [3:MatC] you get to choose the dimensions of the matrix

(mxn]. Once finished entering the matrix you clear the screen.

The operations on matrices are available by pressing [Shift][Matrix]

[1:Dim] to change the dimension of a matrix (in fact redefining the matrix)

[2:Data] enter values in a matrix

[3:MatA] access Matrix A

[4:Matb] access Matrix B

[5:MatC] access matrix C

[6:MatAns] access the Answer Matrix (the last matrix calculated)

[7:det] Calculate the determinant of a matrix already defined

[8:Trn] The transpose of a matrix already defined

To add matrices MatA+MatB

To subtract MatA-MatB

To multiply MatAxMatB

To raise a matrixe to a power 2 [x2], cube [x3]

To obtain inverse of MatA already defined MatA[x-1] [x-1] is the x to the power -1 key

Dimensions of matrices involved in operations must match (see you textbook for the rules)

Read the appendix to your user manual, there are several exemples.

Hope helps

Posted on Oct 12, 2009

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Http://support.casio.com will allow you to download a manual

Posted on Oct 11, 2009

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You are confusing this calculator with one of its more sophisticated brothers (FX 115 ES Plus or FX991ES plus). The 82 ES plus has only three modes.

Jun 02, 2015 | Casio FX82ES Scientific Calculator

The Casio FX-570MS does not handle matrices. So you cannot create matrices, let alone invert them. Sorry.

The Casio FX115 ES handles matrices for up to 3X3 dimension. Create the matrix.Have its name displayed on the command line and press the [x^-1] (reciprocal ) key.

The Casio FX115 ES handles matrices for up to 3X3 dimension. Create the matrix.Have its name displayed on the command line and press the [x^-1] (reciprocal ) key.

Apr 16, 2014 | Casio FX-115ES Scientific Calculator

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 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

Let your system of linear equations be [A][X]=[B] where [A] is a 3x3 matrix, [X] is column vector ( a 3x1 matrix) , and [B] is also a column vector or (3x1) matrix.

Assuming you are able to invert the [A] matrix to find [A^-1].

Multiplying on the keft by [A^-1] the system of equations you get

[A^-1].[A][X]=[A^-1][B].

But since the product [A^-1][A] is the (3x3) Identity matrix, the left side of the equation is jut [X], while the right side is [A^-1][B]. As you can see it is not [B][A^-1] .

To solve your problem, you should define your [A] matrix, define the [B] column vector (3x1) matrix, then perform the operation [A^-1][B] using the [X to -1] power key to calculate the inverse [A^-1].

Assuming you are able to invert the [A] matrix to find [A^-1].

Multiplying on the keft by [A^-1] the system of equations you get

[A^-1].[A][X]=[A^-1][B].

But since the product [A^-1][A] is the (3x3) Identity matrix, the left side of the equation is jut [X], while the right side is [A^-1][B]. As you can see it is not [B][A^-1] .

To solve your problem, you should define your [A] matrix, define the [B] column vector (3x1) matrix, then perform the operation [A^-1][B] using the [X to -1] power key to calculate the inverse [A^-1].

Jan 10, 2011 | Casio FX-115ES Scientific Calculator

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Sep 26, 2010 | Casio FX-115ES Scientific Calculator

Go to link below and download the manual it is all in that.
support.**casio**.com/pdf/004/**fx**-5800P_E.pdf

Mar 07, 2010 | Casio FX-115ES Scientific Calculator

Hello,

It may be due to the angle unit used. You can have angles in degrees, in radians, and in grads. You should set the default angle unit to waht you problem calls for.

To set degree as default SHIFT MODE 3

To set radians as default SHIFT MODE 4

To set grads as default SHIFT MODE 5

The values of angles calculated by the inverse trigonometric functions are in the default unit that is set . This may be the source of the wrong answers that you get.

Hope it helps.

It may be due to the angle unit used. You can have angles in degrees, in radians, and in grads. You should set the default angle unit to waht you problem calls for.

To set degree as default SHIFT MODE 3

To set radians as default SHIFT MODE 4

To set grads as default SHIFT MODE 5

The values of angles calculated by the inverse trigonometric functions are in the default unit that is set . This may be the source of the wrong answers that you get.

Hope it helps.

Sep 16, 2009 | Casio FX-115ES Scientific Calculator

Hello,

Tell us what you want to do and we will be happy to help you. Algebra is a very wide subjetct.

Here is the link to your manual and its appendix. They will tell you what the calculator can do.

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Hope it helps

Tell us what you want to do and we will be happy to help you. Algebra is a very wide subjetct.

Here is the link to your manual and its appendix. They will tell you what the calculator can do.

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Hope it helps

Aug 28, 2009 | Casio FX-115ES Scientific Calculator

Hello,

Use your internet seach engine or go to the casio worldwide web site. A google search returned this link to the New-Zealand site.

http://casionz.co.nz/Site/Pronto/Files/user_manuals/FX-115ES%20991ES.PDF

Hope it helps

Use your internet seach engine or go to the casio worldwide web site. A google search returned this link to the New-Zealand site.

http://casionz.co.nz/Site/Pronto/Files/user_manuals/FX-115ES%20991ES.PDF

Hope it helps

Mar 09, 2009 | Casio FX-115ES Scientific Calculator

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