Difference between revisions of "Quadratic equation"
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Latest revision as of 11:51, 9 March 2019
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Contents
| Quadratic equation | |
| [ilmath]ax^2+bx+c\eq 0[/ilmath] |
Information
Only turning point
- [math]\frac{d}{dx}\big[ax^2+bx+c\big]\Big\vert_{x}\eq 2ax+b[/math]
We are interested in the derivative being zero, ie:
- [ilmath]2ax+b\eq 0[/ilmath]
- [ilmath]\implies 2ax\eq -b[/ilmath]
- [math]\implies x\eq\frac{-b}{2a} [/math] Confirmed
