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Math Help - Geometric chain rule proof and question about area formula for polar coordinate

  1. #1
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    Geometric chain rule proof and question about area formula for polar coordinate

    ok i remember i took notes for the proof of chain rule and the teacher used triangles and stuff so it was a lot of geometry which i didn't understand at the time.. unfortunately i threw it out and i cannot for the life of me find it ANYWHERE on the internet.. does anyone know what i'm talking about? can you help me out T_T

    i also don't remember the proof for the area formula for polar functions.. integral a to b of 1/2r^2 d theta .. does anyone have the proof for it?
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  2. #2
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    Re: Geometric chain rule proof and question about area formula for polar coordinate

    not on first page so bump
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