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| | Alyson is the title individuals use to call me and I think it seems fairly good when you say it. To play lacross is 1 of the things she loves most. Kentucky is where I've always been living. Office supervising is what she does for a residing.<br><br>Here is my website; [http://test.Jeka-nn.ru/node/129 tarot card readings] |
| {{Portal:Mathematics/Feature article|img=Polynomialdeg2.png|img-cap=The graph of a [[real number|real-valued]] quadratic function of a real variable ''x'', is a [[parabola]].|img-cred=[[User:Enochlau|Enoch Lau]]|more=Quadratic equation|desc=A '''quadratic equation''' is a [[polynomial]] [[equation]] of [[degree of a polynomial|degree]] two. The general form is
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| :<math>ax^2+bx+c=0,\,\!</math>
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| where ''a'' ≠ 0 (if ''a'' = 0, then the equation becomes a [[linear equation]]). The letters ''a'', ''b'', and ''c'' are called [[coefficient]]s: the quadratic coefficient ''a'' is the coefficient of ''x''<sup>2</sup>, the linear coefficient ''b'' is the coefficient of ''x'', and ''c'' is the [[constant]] coefficient, also called the ''free term''. | |
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| Quadratic equations are called ''quadratic'' because ''quadratus'' is [[Latin]] for "square"; in the leading term the variable is [[square (algebra)|squared]].
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| A quadratic equation has two (not necessarily distinct) solutions, which may be [[real number|real]] or [[complex number|complex]], given by the '''quadratic formula''':
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| :<math>x = \frac{-b \pm \sqrt {b^2-4ac}}{2a},</math>
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| These solutions are [[root (mathematics)|''roots'']] of the corresponding [[quadratic function]]
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| :<math>f(x) = ax^2+bx+c.\,</math>|class={{{class}}}}}
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Revision as of 04:01, 16 February 2014
Alyson is the title individuals use to call me and I think it seems fairly good when you say it. To play lacross is 1 of the things she loves most. Kentucky is where I've always been living. Office supervising is what she does for a residing.
Here is my website; tarot card readings