Math question

[Seth8530]

Originally Posted by Neal Stevens

@ Gargamel

While doing the exercises at Khan Academy, finding the slope of a line, there was one example where the text shows

m = y1-y2/x1-x2

Now, that's different from everything else they show, and everything else I can find on the web, where slope is clearly defined as

m = y2-y1/x2-x1

That's the correct definition, right? There's no y1-y2 version is there? Or does it not make a difference?

There are equivalent because with the first equation say you get -3/1 after the calculation. with the second one using the same numbers you would get 3/-1 which are equivalent.

[Gargamel]

The sequence doesnt matter too much as long as you keep to pairs together. (x1,y1) & (x2,y2).

Think of it as plotting an intercept for a convoy.

[Dan D]

@Neal

Next time you get pulled over by the police for not stopping at a stop sign you can fight the ticket with your new math skills:

The Proof of Innocence

Date of article is 1.April 2012 though, could be a mathematician joke. Is it?

[Gargamel]

The paper is real, but it's not why he got out of the ticket.

[Dan D]

Originally Posted by Gargamel

The paper is real, but it's not why he got out of the ticket.

What do you mean when you say:"it's not why he got out of the ticket"?

[Onkel Neal]

Originally Posted by Dan D

@Neal

Next time you get pulled over by the police for not stopping at a stop sign you can fight the ticket with your new math skills:

The Proof of Innocence

Date of article is 1.April 2012 though, could be a mathematician joke. Is it?

Beautiful!

Originally Posted by Gargamel

The sequence doesnt matter too much as long as you keep to pairs together. (x1,y1) & (x2,y2).

Think of it as plotting an intercept for a convoy.

Originally Posted by Seth8530

There are equivalent because with the first equation say you get -3/1 after the calculation. with the second one using the same numbers you would get 3/-1 which are equivalent.

Yeah, thanks, I finally proved that out to my satisfaction.

[Gargamel]

The judge ruled the cop was too far away to see the intersection. It had nothing to do with the paper.

There was a physicist here in Cleveland at NASA that got out of a speeding ticket a while though. He tried to show the radar gun couldn't be used as the cop was using it. The judge didn't buy it until the physicist showed the judge the patent for the radar gun, with his name on it.

[NeonSamurai]

Heh if you guys want painful math, I remember doing my stats courses for psychology. The worst by far though was Psychometrics using formulas like this one Cronbach's Alpha<shudder>.

[Gargamel]

[Diopos]

Originally Posted by Gargamel

Good one!







.

[Seth8530]

Alright, since it appears we are playing trivia, lets see how long it is before some one answers this one... Without cheating!! Not that it is hard, but just a little tricky. (as I learned in my differential equations course.)


1) e^-ln(x)

2)

Have fun, no cheating.

BTW @ Neal, you are correct, the biggest part about doing maths or any thing that is abstract is not reading it in a book or seeing that it is true online. But actually proving to yourself that yes, this does indeed work.. Then, it truly becomes your tool to use.

[Spoon 11th]

1+2=12