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

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