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Topic: (5)are all Univ.Western Ontario mathematicians like
Ajneet Dhillon, Matthias Franz, John Jardine as dumb as Dan
Christensen, teaching a Conic section is ellipse, when in t
ruth it is an oval?

Replies: 4   Last Post: Oct 3, 2017 12:10 PM

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plutonium.archimedes@gmail.com

Posts: 17,468
Registered: 3/31/08
Re: (5)are all Univ.Western Ontario mathematicians l
ike Ajneet Dhillon, Matthias Franz, John Jardine as dumb as
Dan Christensen, teaching a Conic section is ellipse, when
in truth it is an oval?

Posted: Oct 3, 2017 8:45 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Now the reason Franz makes so many geometry mistakes, like Dan Christensen is because both were mistaught, very much mistaught as seen in the below exchange -- what is distinct and not distinct and so they cannot tell the difference between a circle, ellipse or oval. Can they tell the difference between a plant and animal or did they miss that in graduate school.

On Wednesday, January 25, 2017 at 10:08:09 AM UTC-6, Peter Percival wrote:
> Dan Christensen wrote:
> > On Wednesday, January 25, 2017 at 9:47:32 AM UTC-5, Archimedes Plutonium wrote:
> >> On Wednesday, January 25, 2017 at 8:27:19 AM UTC-6, Dan Christensen wrote:
> >>> On Wednesday, January 25, 2017 at 9:16:52 AM UTC-5, Archimedes Plutonium wrote:
> >>>> PAGE58, 8-3, True Geometry / correcting axioms, 1by1 tool, angles of logarithmic spiral, conic sections unified regular polyhedra, Leaf-Triangle, Unit Basis Vector
> >>>>
> >>>> The axioms that are in need of fixing is the axiom that between any two points lies a third new point.

> >>>
> >>> The should be "between and any two DISTINCT points."
> >>>

> >>
> >> What a monsterous fool you are
> >>

> >
> > OMG. You are serious. Stupid and proud of it.

>
> And yet Mr Plutonium is right.  Two points are distinct (else they would
> be one) and it is not necessary to say so.
>




On Tuesday, October 3, 2017 at 5:04:59 AM UTC-5, Me wrote:

> Cone/Cylinder (side view):
>
> / | \ (with b <= a)
> /b | \
> /---+---´ <= x = h
> / |´ \
> / ´ | \
> / ´ | \
> x = 0 => ´-------+-------\
> / a | \
>
> (cone: b < a, cylinder: b = a = r)
>
> r(x) = a - ((a-b)/h)x
> d(x) = a - ((a+b)/h)x
>
> y(x)^2 = r(x)^2 - d(x)^2 = ab - ab(2x/h - 1)^2 = ab(1 - 4(x - h)^2/h^2
>
> => (1/ab)y(x)^2 + (4/h^2)(x - h)^2 = 1 ...equation of an ellipse
>
> Some considerations:
>
> => y(h/2 + x')^2 = sqrt(ab - ab(2(h/2 + x')/h - 1)^2) = ab - ab(2x'/h)^2
>
> => y(h/2 + x') = sqrt(ab) * (sqrt(1 - (2x'/h)^2) ...symmetric relative to h/2 (hence Ec = cF)
>
> => y(h/2) = sqrt(ab) (= Gc = cH)
>
> ======================================================
>



Franz, do you understand that

Ajneet Dhillon is distinct from Matthias Franz which is distinct from University of Western Ontario.

Me thinks:: Me thinks Franz has much to -- de-learn as he grows older -- in order to become wiser

Franz, do you see that a oval is distinct from a ellipse




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