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

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