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Plot y vs x with multiple terms/variables?

Posted 6 months ago
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I am trying to plot a ( $y$ vs $x$ style) graph with Wolfram Alpha, but the syntax needed is a little more involved.

I started with:


which solves a single number for p. That's what I wanted.

But now I want to graph p as the dependent variable and r as the independent.

Here are some examples that don't work:

b=(v*((0.2)/(r/2+0.2))),p=((v-b)^2/r),v=6.6, graph p vs r

b=(v*((0.2)/(r/2+0.2))),p=((v-b)^2/r),v=6.6 plot p

plot b=(v*((0.2)/(r/2+0.2))),p=((v-b)^2/r),v=6.6 from r=1 to 20

None of those result in a graph.

As you can see, I'm not versed enough in the Wolfram Alpha syntax to pull this off unless I use the more simple plot x^2+1 style.

How can I graph p vs r?

Ideally, I want to leave the different "pieces"/"terms" (what do I call those?) as separate parts. (I don't want to combine b=(v*((0.2)/(r/2+0.2))) and p=((v-b)^2/r), and I want to have separately defined constants like v)

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