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#1 2006-01-31 13:13:44
- CoCoOster
- Member
- Registered: 2006-01-29
- Posts: 11
Solving Quadratic Functions by Graphing
Does any one know how to identify the roots of a quadratic equation if the equation is really long? 
P.S. If you need I will provide an example.
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#2 2006-01-31 13:37:56
- irspow
- Member
- Registered: 2005-11-24
- Posts: 1,055
Re: Solving Quadratic Functions by Graphing
Please do.
As far as solving it by graphing, it is pretty self evident. Graph your equation and wherever the curve meets the x axis is a root.
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#3 2006-01-31 13:38:43
- Ricky
- Moderator
- Registered: 2005-12-04
- Posts: 3,791
Re: Solving Quadratic Functions by Graphing
What do you mean, "if the equation is really long"? By definition, a quadratic can only have 3 terms. It can't be any longer than that. All quadratic equations take the form of:
ax^2 + bx + c = 0
To solve this, use the quadratic equation, or, if you have a graphing calculator, graph it and find out when it crosses the x-axis (x = 0).
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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