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Ppt0000000

1. 1. Introductory Algebra
2. 2. quadratic equation <ul><li>A quadratic equation is an equation that can be written in the form ax 2 + bx + c = 0, where a, b, and c are real numbers, with a 0. </li></ul>
3. 3. discriminant <ul><li>The quantity under the radical in the quadratic formula, b 2 - 4ac. </li></ul>
4. 4. complex number <ul><li>Any number that can be written in the form a + bi, where a and b are real numbers. </li></ul>
5. 5. imaginary number <ul><li>A complex number a + bi </li></ul><ul><li>with b  0. </li></ul>
6. 6. real part <ul><li>The real part of a complex </li></ul><ul><li>number a + bi is a. </li></ul>
7. 7. imaginary part <ul><li>The imaginary part of the </li></ul><ul><li>complex number a + bi is b. </li></ul>
8. 8. standard form of a complex number <ul><li>The standard form of a </li></ul><ul><li>complex number is a + bi. </li></ul>
9. 9. conjugate of a complex number <ul><li>The conjugate of a complex </li></ul><ul><li>number a + bi is a - bi. </li></ul>
10. 10. parabola <ul><li>The graph of a second-degree (quadratic) equation in two variables is called a parabola. </li></ul>
11. 11. parabola <ul><li>The graph of a second-degree (quadratic) equation in two variables is called a parabola. </li></ul>
12. 12. axis (axis of symmetry) <ul><li>The axis of a parabola is the vertical or horizontal line through the vertex of the parabola. </li></ul>
13. 13. quadratic function <ul><li>A function defined by an equation of the form f(x) = ax 2 + bx + c, for real numbers a, b, and c, with a 0. </li></ul>