Is is possible to multiply the matrix M with either A or c?

[conv]

Homework Statement

Matrices

Relevant Equations

(mxn) x (nxk)

is is possible to multiply the matrix M with either A or c->?

And if i have to write the matrices in this form:

, do i divide c-> by A or do i follow som other formula?

 

[member 587159]

What are the dimensions of $A$ of and $\vec{c}$?

 

[conv]

3x3 and 3x1, they can be multiplied

 

[member 587159]

3x3 and 3x1, they can be multiplied

Yes, so what's your question? Can you please clarify?

 

[conv]

How can i find vector x :

Do i have to multiply A with c ? Because its not possible to divide them?

 

[etotheipi]

You have to matrix multiply by the left by $A^{-1}$, assuming that $A$ is non-singular.

 

[member 587159]

For what values of $s$ is $A$ an invertible matrix? (Possible hint: Determinants).