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## Discrete Math Unit 1 and 2 ReviewAuthor: Sturdivant VictoriaDescription: match each to its correct pair.Keywords: , , , , , , online teachingContent:Definitions: 0. rational numbers 1. How do I solve a system by matrices 2. transpose a matrix 3. ways to solve systems of equations 4. whole numbers only 5. What is a row matrix? 6. inverse of matrix A 7. integers only 8. When can I multiply matrices 9. determinant 10. when is the inverse undefined 11. natural numbers only 12. irrational numbers 13. when can I multiply a scalar by a matrix 14. How do I find the resulting dimensions from matrix multiplication 15. inverse of a matrix Answers: 0. A^-1 1. (1/ad-bc) times [d -b] [-c a] 2. 5, squrt (36), 10 3. this is always defined, just multiply b a constant 4. 0, squrt (25), 4 5. -5, 0, 4 squrt (64) 6. use the row of the first matrix and the column of the second matrix. 7. .5, -1.5, 0, 10 squrt (100) 8. Inverse of the coefficient matrix times the constant matrix 9. squrt(2) squrt (8) 10. switch the rows and columns 11. when the row of the second matrix equals to column of the first matrix 12. when the determinant is 0. 13. ad-bc 14. substitution elimination matrices graping 15. when the dimensions are 1x4 |