Discrete Math Unit 1 and 2 ReviewAuthor: Sturdivant Victoria
Description: match each to its correct pair.
Keywords: , , , , , , online teaching
Content:
Definitions:
0. rational numbers
1. when is the inverse undefined
2. integers
only
3. inverse of a matrix
4. irrational numbers
5. How do I find the resulting dimensions from matrix multiplication
6. natural numbers
only
7. How do I solve a system by matrices
8. transpose a matrix
9. determinant
10. whole numbers
only
11. inverse of matrix A
12. What is a row matrix?
13. ways to solve systems of equations
14. When can I multiply matrices
15. when can I multiply a scalar by a matrix
Answers:
0. when the row of the second matrix equals to column of the first matrix
1. when the determinant is 0.
2. use the row of the first matrix and the column of the second matrix.
3. -5, 0, 4 squrt (64)
4. substitution
elimination
matrices
graping
5. 5, squrt (36), 10
6. this is always defined, just multiply b a constant
7. (1/ad-bc) times
[d -b]
[-c a]
8. .5, -1.5, 0, 10
squrt (100)
9. Inverse of the coefficient matrix times the constant matrix
10. squrt(2)
squrt (8)
11. A^-1
12. when the dimensions are
1x4
13. ad-bc
14. switch the rows and columns
15. 0, squrt (25), 4
|