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henpen
 3 years 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?
henpen
 3 years 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?

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henpen
 3 years ago
Best ResponseYou've already chosen the best response.0I've always found it odd how it seems plucked out of thin air

Jonask
 3 years ago
Best ResponseYou've already chosen the best response.1here is a link this is called differentials chew on it

henpen
 3 years ago
Best ResponseYou've already chosen the best response.0Oh differentials I wasn't thinking!
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