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\[y^2=2px\] \[ \Rightarrow 2ydy=2pdx \]
How is this achieved at? I've always gone with calculating
\[ 2y\frac{dy}{dx}=2p \] and multiplying both sides by dx. But I know that's heresy.
What's the official story as to how it's arrived at?
 one year ago
 one year ago
\[y^2=2px\] \[ \Rightarrow 2ydy=2pdx \] How is this achieved at? I've always gone with calculating \[ 2y\frac{dy}{dx}=2p \] and multiplying both sides by dx. But I know that's heresy. What's the official story as to how it's arrived at?
 one year ago
 one year ago

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henpenBest ResponseYou've already chosen the best response.0
I've always found it odd how it seems plucked out of thin air
 one year ago

JonaskBest ResponseYou've already chosen the best response.1
here is a link this is called differentials chew on it
 one year ago

henpenBest ResponseYou've already chosen the best response.0
Oh differentials I wasn't thinking!
 one year ago
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