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henpen Group Title

\[y^2=2px\] \[ \Rightarrow 2ydy=2pdx \] 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?

  • 2 years ago
  • 2 years ago

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  1. henpen Group Title
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    I've always found it odd how it seems plucked out of thin air

    • 2 years ago
  2. Jonask Group Title
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    here is a link this is called differentials chew on it

    • 2 years ago
  3. henpen Group Title
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    Oh differentials- I wasn't thinking!

    • 2 years ago
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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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