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

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