Individual Work

2. 4a+2b+3c=5,-2a+5b=-9,12c=-12 find a in this system.
4. A=[a11=2 a12=-3 a13=1 a21=5 a22=10 a23=6 a31=8 a32=-7 a33=5] find the rank of the matrix and multiply the answer by seven.
5. How many elements in az 3x3 matrix?
8. A matrix whose determinant is zero.
9. What is the number of linearly independent rows and columns of a matrix?
13. What is a matrix having all zero elements below its main diagonal called?
15. To solve the system and find x-y;-3x+5y=-22,3x+4y=4,4x-8y=32.
16. a11=2 a12=1 a21=3 a22=4,what is the determinant this matrix?

1. A square matrix whose all elements above the main diagonal are zero is called a...
3. A matrix with the same number of rows and column.
6. A matrix that is both upper and lower triangular is called?
7. What is it called when you switch the rows and columns of az matrix?
10. A diagonal matrix having all diagonal elements equal to each other.
11. m=y2-y1/x2-x1 what can be found with this formula?
12. The dimension of the null space of a matrix is called...
14. a+3b=7,3a+4b=11, findc a+b.