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 Post subject: GraphingPosted: Fri, 10 Feb 2012 23:57:57 UTC
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I need help graphing this equation:

x^3=5-x

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 Post subject: Re: GraphingPosted: Fri, 10 Feb 2012 23:59:28 UTC
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kweevuss wrote:
I need help graphing this equation:

x^3=5-x

There's nothing to graph, that's not a function, it's an equation. I mean it has roots, but that's about it.

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 Post subject: Re: GraphingPosted: Sat, 11 Feb 2012 00:07:14 UTC
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That's what I though. But I'm trying to help a friend, and all the instructions say is to graph a series of equations and they are like that one. I guess the questions are wrong?

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 Post subject: Re: GraphingPosted: Sat, 11 Feb 2012 00:19:46 UTC
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kweevuss wrote:
That's what I though. But I'm trying to help a friend, and all the instructions say is to graph a series of equations and they are like that one. I guess the questions are wrong?

Unless there is a function involved, there is no such thing as a graph. Perhaps you can look for some context in the source material (e.g. a textbook). It may be, for example, that the intent is to get the solver to present the solutions to the equation graphically, which is different from graphing something. Context is essential.

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 Post subject: Re: GraphingPosted: Sat, 11 Feb 2012 01:39:13 UTC
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Wild guess:

graph x^3 and graph 5-x (on the same page). The solution to the equation is where the two graphs cross.

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 Post subject: Re: GraphingPosted: Sat, 11 Feb 2012 03:20:23 UTC
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Or perhaps "solve" (not "graph") is meant.
Can you solve x^3 + x - 5 = 0 ?

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