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Definition
| A collection of objects or numbers, often shown usig braces { } and usually named by a capital letter |
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| Each object or number in a set; Each entry in a matix |
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| If every element of set B is contained in set A, then B is a subset of A |
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| The set of all possible elements for a situation |
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| The complement of an event A consists of all the outcomes in the sample space that are not included as outcomes of event A |
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| The union of sets A and B is all elements in both A and B, written as A υ B |
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| The intersection of sets A and B is all elements foundin both A and B, written as A ∩ B |
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| A set with no elements, sembolized be {} or Ø |
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Definition
| i, or the principal square root of -1 |
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| Any # that can be written in the form a + bi, where a and b are real #'s and i is the imaginary unit |
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| A complex # written in the form of a + bi |
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Definition
| Another name for a complex # or the form a + bi, when b≠0 |
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| Two complex #'s of the form a + bi and a - bi, where b ≠0 |
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| The locus of points in a plane that are equidistant from a fixed point, called the focus, and a specific line, called the directrix |
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| A line about which a figure is symmetric. In a parabola, the axis of symmetry is perpendicular to the directrix and passes through the focus |
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Definition
| The common endpoint of two or more noncollinear rays; A point at which a parabola intersects its axis of symmetry; The two endpoints of the major axis of an ellipse |
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Definition
| A process used to make a quadratic expression into a perfect square trinomial |
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Definition
| For any real # a and b, and any positive integer n, if an = b, than a is an nth root of b |
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| A set of equations with the same variables |
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| A method of solving a sstem of equations in which one equation is solved for one variable in terms of the other |
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Definition
| Eliminate one of the variables in a system of equations by adding or subtracting the equation |
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| Any rectangular array of variables or contants in horizontal rows and vertical columns |
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| A description of the number of rows and columns of a matrix |
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Definition
| A situation involving chance or probability that leads to specific outcomes |
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Definition
| If n is a positive integer, then n!=n(n-1)(n-2) •...• 2x1 |
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Definition
| An arrangement of objects in which order is important |
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| An arrangement of objects in which order is not important |
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| Measure of central tendency |
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| A number that represents the center or middle of a set of data |
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| A representation of how spread out or scattered a set of data is |
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| A table used to organize data by groups, classes, or intervals |
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