Across
- 1. if 2 lines are ... their slopes are equal
- 4. the dimension of the nullspace of A is called ...
- 5. if the product of their slopes is -1, these 2 lines are ...
- 7. if A is an m*n matrix then the n*m matrix is called the ... of A.
- 10. find the determinant of the matrix: a11=2 a12=1 a21=3 a22=4
- 11. the process of obtaining a 1 in a location, and then making all other entries zeros in that column , is called...
- 13. a matrix formed by combining the columns of 2 matrices to form a new matrix
- 15. if we have A and B matrices and we want to find (2,3) entry of AB.We should multiply row 2 of A and ... 3 of B
- 17. A matrix that does not have an inverse is called
- 20. m=y2-y1/x2-x1 what can be found with this formula
- 21. a diagonal matrix A whoch all terms on the main diagonal are equal, this matrix is called a ... matrix
Down
- 2. a square matrix is called ... if it has all zero entries above its main diagonal
- 3. if the system has no solution, the system is called ...
- 6. if it had all zero entries below its main diagonal, a square matrix is called ...
- 8. compute A*B and then multiply the answer by 3 A=a11=1 a21=2 a31=3 B= a11=2 a21=3 a31=-2
- 9. ... has magnitude and direction
- 12. find x+y: x+3y=7 3x+4y=11
- 14. a matrix that is both upper and lower triangular is called ...
- 16. a11, a22, and a33are ... elements of 3*3 matrix
- 18. the dimension of the row or column space of a matrix A is called ...
- 19. solve the system and find the x: x-2y+3z=9 y+3z=5 z=2