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

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