4 replies to this topic

[colsandoz]

OK, I have a Casio FX-9750G PLUS and Im trying to figure out how to solve a 3x4 matrix that returns 2 variables and a parameter.

Whenever I put such a matrix into the Equ. Solver I get a "ma error", and there does not seem to be an automated way to do row reduction (like with a TI-8x)... I would have to keep on doing row operation after row operations, which is not much better than dong the whole problem by hand.



heres an example of such a matrix that would return 2 variables and a parameter when row reduced.

(x)``(y)``(z)
2```-4``` 2```;````4
5````3```-1```;```17
15```-5```3```;```25

(derived from a system of equations)

any help would be great!

[colsandoz]

never mind, found a program that will do it on my calculator

[CrimsonCasio]

cool, sorry we didnt help you

[BiTwhise]

You'd need to split it up into 2 matrices, one 3x3, and one 3x1
then your answer would be mat1^-1 * mat2
which is probably what your program is doing already

the easier thing to do though, would be to use the equation solver... (which probably does a similar thing internally, but works a bit faster)

or doesn't the 9750 have a solver?

[Andy.Davies]

the 9750 has simulanious and polynominal equation solver