# Is this real maths or somebody winding me up?

Discussion in 'The Cesspool' started by amber, Feb 4, 2018.

1. ### DaveC426913Valued Senior Member

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You wouldn't.
c ~ 1/a is a continuum, infinitely long, so "at" doesn't make sense.

You could say when.

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3. ### amberRegistered Member

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I am trying to explain a burst of energy/flash of light , I would of thought the energy/light would travel at c ?

Appear then in a split second vanish at c.

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5. ### DaveC426913Valued Senior Member

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You've got the cart before the horse.
Don't try to do it with math if you haven't learned the math.

Why try to explain something that is already well-understood?
If you are interested in physics, why not learn about physics?

Until you understand established physics, you're not ready to have your own ideas.

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7. ### amberRegistered Member

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Well if I can learn the math for this particular matrix, then I may be able learn lots more. I understand I get to the end without a beginning or a middle and you are correct , I need to learn more. Every time I get an answer, I learn more. I have learnt quite a bit in the last few days, as with my example you can see I am learning. I even understand , in example : [-2,4] they are coordinates .
Two to the left and Four up .

added- In another example

let u=[0,0,0] and let v=[0,0,0]

I know I am explaining dead centre.

would z need to be +5?

[o,o,+5]?

How big is the box ? 0-10?

Sorry , just worked it out, the X,Y lines are already in the middle of Z to allow -Z direction?

so [0,0,0] would be centralised?

Last edited: Feb 5, 2018
8. ### amberRegistered Member

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My learning is not advancing, where is that kind person Dy gone?

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Indeed not.

10. ### amberRegistered Member

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is [0,0,0] dead centre? Using a matrix coordinate system.

11. ### exchemistValued Senior Member

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No, Theorist, it would be worse than teaching chemistry to river. (I tried it once.)

12. ### amberRegistered Member

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This theorist you keep mentioning does not exist. Please help me learn some of this particular math.

What would dead centre be then using a Matrix coordinate system?

And is this calculus?

13. ### originHeading towards oblivionValued Senior Member

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You cannot jump into matrix math without any knowledge to build from and hope to understand what is going on.
There is no such thing as a matrix coordinate system.
If your matrix is describing a Cartesian coordinate system then (0,0,0) is the origin.

14. ### amberRegistered Member

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Thank you very much origin, you will not regret learning me.

What do ''we'' mean by Cartesian?

Would Cartesian be our present use or classical use?

15. ### originHeading towards oblivionValued Senior Member

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Let's cut to the chase then, are you the same person as theorist-constant12345
Oh for crying out loud, NO.

16. ### originHeading towards oblivionValued Senior Member

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I doubt that...

You don't learn someone, you teach someone.

Look up Cartesian coordinate on google, it is very clear.

17. ### amberRegistered Member

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Am I the same person as a character , a performance artist, an alias on a forum?

No I am not this person.

Thank you for answering my question about Calculus.

18. ### amberRegistered Member

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A Cartesian coordinate system is a coordinate systemthat specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.

I do have the links open also, I am not being lazy. I just like to hear it explained several different ways so I am sure that I understand.

It is basically a grid reference?

19. ### amberRegistered Member

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If the lower limit is 0 , what is the upper limit, 10?

Is -10 or +10 the limit?

20. ### Michael 345New year. PRESENT is 72 years oldlValued Senior Member

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I think you have a bottomless well whatifer

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21. ### amberRegistered Member

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To clarify my understanding, if we used a Cartesian coordinate system and defined the matrix to be a 8*8*8 , we could have a really good game of 3d chess? Using the system to make our moves of the pieces.

22. ### Michael 345New year. PRESENT is 72 years oldlValued Senior Member

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I don't do mathematics in any size / shape / form and the closest I have come to Cartesian is reading the odd headline about Kardashian

But I'm guessing they are not the same

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Last edited: Feb 5, 2018
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23. ### amberRegistered Member

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Lol, thank you for replying. I think the Cartesian coordinate system is easy enough to understand, it is basically just different points inside of a box. It seemingly gives the dead centre of the box a 0 position value (the observer) , then minus and plus vector values ''expand'' from this point.
I am yet to understand how this works though, if the box is in motion.