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

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