Have you seen this matrix before?

matrixnoob said:
http://www.freeimagehosting.net/iumr9

i cant solve this at all, i only understand matrix with all numbers in it, have no idea how to read this matrix at all.

any step by step method to derive the final answer?
Click to expand...

Do you understand that:

|..a11..........a12.........a13|.....|x1| ..................a11 * x1 + a12 * x2 + a13 * x3
|..................................|.....|...|
|..a21..........a22.........a23|.....|x2|......... = ......a21 * x1 + a22 * x2 + a23 * x13
|..................................|.....|...|
|..a31..........a32.........a33|.....|x3| .................a31 * x1 + a32 * x2 + a33 * x3
 
matrixnoob said:
http://www.freeimagehosting.net/iumr9

i cant solve this at all, i only understand matrix with all numbers in it, have no idea how to read this matrix at all.

any step by step method to derive the final answer?
Click to expand...
Solve what? You have posted a matrix- what do you want to do with it? It looks like the "augmented matrix" for a system of equations. Are you to solve the system of equations? If so, that does have "all numbers in it". As Subhotosh Kahn indicated, all missing numbers are assumed to be 0. The matrix is
\(\displaystyle \begin{bmatrix}\frac{1}{.8975} & 0 & 0 & 300 \\ 0 & \frac{1}{.485} & 0 & -50\\ 0 & 0 & \frac{1}{.332} & 10\end{bmatrix}\)

Now, it should be pretty easy to solve that.
 
matrixnoob said:
anyone please?
Click to expand...


If that is all you have to work off of, then it does not make sense. Perhaps it does not mean multiply in the standard sense, in fact it cannot, as the matrix product is undefined.

We know nothing about your course, the question, or the notation used. Supply background information and the entire question, and maybe someone can help.
 
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