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Discrete Math Unit 1 and 2 Review

Author: Sturdivant Victoria
Description: match each to its correct pair.
Keywords: , , , , , , online teaching

Content:
Definitions:
0. when can I multiply a scalar by a matrix
1. whole numbers only
2. How do I find the resulting dimensions from matrix multiplication
3. irrational numbers
4. What is a row matrix?
5. How do I solve a system by matrices
6. inverse of matrix A
7. ways to solve systems of equations
8. natural numbers only
9. rational numbers
10. when is the inverse undefined
11. inverse of a matrix
12. transpose a matrix
13. integers only
14. When can I multiply matrices
15. determinant

Answers:
0. 5, squrt (36), 10
1. A^-1
2. when the determinant is 0.
3. use the row of the first matrix and the column of the second matrix.
4. when the dimensions are 1x4
5. substitution elimination matrices graping
6. this is always defined, just multiply b a constant
7. when the row of the second matrix equals to column of the first matrix
8. Inverse of the coefficient matrix times the constant matrix
9. .5, -1.5, 0, 10 squrt (100)
10. ad-bc
11. 0, squrt (25), 4
12. -5, 0, 4 squrt (64)
13. (1/ad-bc) times [d -b] [-c a]
14. switch the rows and columns
15. squrt(2) squrt (8)
.