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

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