Posted by **Akash** on Monday, April 11, 2011 at 6:12am.

matrix{{0, 1, -1}, {2, 1, 3}, {1, 1, 1}} matrix{{1, -1, x}} matrix{{0}, {1}, {1}}=0

Find the value of x

Don't give me the direct answer. Please tell me how to go about this. Draw in your notebook and then solve

- Maths: Algebra Matrices Class 12th -
**MathMate**, Monday, April 11, 2011 at 7:54am
Your matrix notation does not distinguish rows from columns, which is critical in matrices.

The best possible interpretation I get is:

a11 a12 a13

a21 a22 a23

a31 a32 a33

multiplied by

b1

b2

b3

to give

c1 c2 c3

which is then multiplied by another

d1

d2

d3

to give

e=0

So multiply rows of a to the column b to give c, for example:

c1=a11*b1+a12*b2+a13*b3

and similarly for the other rows.

Same for e:

e=c1*d1+c2*d2+c3*d3

Through the multiplication, you will preserve the value of x, and equate the value of e to zero to solve for x.

## Answer this Question

## Related Questions

- Math - I have a few questions about T-Matrix. In excel, I am suppose to work ...
- Math - Hi! I need help with these two questions. Thanks! :) 1.) Can we multiply ...
- Algebra-Matrix - How would I do these Matrices? 1. |1/2 14 10 -8| 2, Let matrix ...
- MATHS----Matrix - For a given square matrix A the predicted values of matrix B ...
- matrices - Two matrices can be multiplied only if their sizes are compatible. ...
- Algebra II (Matrices) - My book doesn't solve it like a linear equation, they ...
- math - Two matrices can be multiplied only if their sizes are compatible. ...
- Algebra II - I skipped algebra I so I never learned about matrices. If you had a...
- Calc - A video games shop is analyzing its sales performance using matrices. ...
- Maths - Matrices - I'm having trouble with doing this matrix proof The question ...