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Chapter 5
Systems
| Question | Answer |
|---|---|
| Inequality | an open sentence using =, <, >, greater than or equal to, or less than or equal to |
| Compound Sentence | uses 'and' or 'or' |
| Intersection | the values the two sets have in common |
| Union | the values that are either in one or both sets |
| Solution Set for a System | the intersection of the solution sets for the individual sentences |
| Consistent System | has one or more solutions |
| Inconsistent System | has no solutions |
| Linear Combination Method | combining the two sentences to get rid of a variable and find the other |
| Inverse Matrices | MN=NM=[1 0 0 1] |
| Matrix Form | [1 3 ][x] = [22] [2 -1][y] [ 2] |
| System-Determinant | a 2x2 matrix has only one solution only if the determinant is not 0 |
| Half-Planes | the line that separates the plane into two distinct regions |
| Boundary | the line that splits the half-planes |
| Feasible Set | the set of solutions to a linear system |
| Vertices | the intersections of the boundaries |