Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.math > #423471

Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test

Cross-posted to 2 groups.

Show all headers | View raw

Math Failure Archimedes Plutonium <plutonium.archimedes@gmail.com> fails:

>On Wednesday, September 12, 2018
>Dan Christensen writes:
>7:55 AM (1 hour ago)
>>WARNING TO STUDENTS:

>AP writes: pretty stupid of John Conway to never admit the ellipse is never
>a conic, always a cylinder section,

Did I hear ellipse? Here you are!!



Below you will find a simple *proof* that shows that certain conic 
sections are ellipses.

Some preliminaries:

Top view of the conic section and depiction of the coordinate system used 
in the proof:

              ^ x
              |
             -+- <= x=h
         .'   |   `.
        .     |     .
        |     |     |
        '     |     '      
         `.   |   .'
 y <----------+ <= x=0
             
Cone (side view):
                 .
                /|\
               / | \
              /b |  \
             /---+---' <= x = h
            /    |'   \
           /   ' |     \
          / '    |      \
x = 0 => '-------+-------\
        /    a   |        \

Proof:

r(x) = a - ((a-b)/h)x  and  d(x) = a - ((a+b)/h)x,  hence

y(x)^2 = r(x)^2 - d(x)^2 = ab - ab(2x/h - 1)^2 = ab(1 - 4(x - h/2)^2/h^2.

Hence (1/ab)y(x)^2 + (4/h^2)(x - h/2)^2 = 1  ...equation of an ellipse

qed

Back to sci.math | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

easier for Donald Trump to tell the truth and scientists and mathematicians Re: software that engineers out stalking bullies on Twitter, Facebook, Google Newsgroups Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-12 19:44 -0700
  Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-13 03:04 +0000
    Boston fools Barry Shein, kibo, MMoroney why can't they admit 938 is not 12% short of 945 Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-01 20:40 -0700
      Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-02 04:37 +0000
        1.1-Racist-math at MIT Henry Cohn, Laurent Demanet, Richard Dudley,Michael Artin, Martin Bazant, Bonnie Berger, Roman Bezrukavnikov, Alexei Borodin, John Bush, Herman Chernoff// Ellipse is never a conic (see proof below) Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-05 15:19 -0700
          Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-06 06:00 +0000
            shitheads Moroney Eastside never do math in sci.math only stalk and pester some for 26 years Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-06 10:47 -0700
              Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-07 03:02 +0000
                Moroney says: Racist Physicists, Barry Barish, Kip Thorne, Rainer Weiss, John M. Kosterlitz, F Duncan M. Haldane, David J. Thouless, Arthur B. McDonald, Takaaki Kajita// fail in Chemistry bonding for it cannot exist when proton=938MeV, electron=.5MeV Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-07 12:41 -0700
                Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-07 21:10 +0000
                page1 The PLUTONIUM ATOM TOTALITY UNIVERSE textbook by Archimedes Plutonium, 2017, 8th edition Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-07 20:51 -0700
                Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-08 14:03 +0000
                Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-10-08 13:32 -0700
                Re: Archimedes "Village Idiot" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-10-08 20:48 +0000

csiph-web