Math

[GorgoBlesk 831]

I can physically feel the deadpan.

You can also physically feel a frying pan. How? Smash yourself with it xD

[Silvercougar 224]

I like how now maths has integrated smashing yourself with kitchen utensils. I look to the future :ph34r: 

[LOLKILLERTOTHEDEATH 1,921]

Now I'm completely lost.

[P.4.R.K.O.U.R 329]

404 Not found = SOS I'm Lost

Hence Proved

[GorgoBlesk 831]

It is time for something very hard xD

 

(x+3)/(x-2)+(x-1)/(x+4)=(5/x)+7

 

I hope it has any answer xD

[Heles 9,220]

It is time for something very hard xD

 

(x+3)/(x-2)+(x-1)/(x+4)=(5/x)+7

 

I hope it has any answer xD

I dont think there's an answer for it. 

(5/x) + 7 screwed me up :p

[Guest]

I like how now maths has integrated smashing yourself with kitchen utensils. I look to the future :ph34r: 

i see what u did there

[Person_Random 4,991]

Help

 

Find derivative of (sin2x)(cos2x)

[Person_Random 4,991]

The books answer is somehow 2cos4x, and I don't understand.

(I got what you got)

Edited September 28, 2018 by Person_Random

[Heles 9,220]

 

Amazing Math Teacher here XD

 

 

 

Its been a year since i did that kind of math. 

Actually, i forgot almost the whole thing. 

But it was indeed fun to learn those topics

 

 

[LOLKILLERTOTHEDEATH 1,921]

Is there any function which has no derrivative? I don't mean like trying to find the derrivative of 1/x at the point (0.0000000000000000000000001,100000000000000000) but in general (as in a function which has no derrivative)

 

Sorry if the zeroes aren't correctly present.

[ThirdOnion 4,898]

Is there any function which has no derrivative?

A function must be continuous to have a derivative. Some continuous functions may not have a derivative at a given point. Take f(x) = |x| for example. To put it informally, the graph has a corner at x = 0. How do you draw a line tangent to a corner? You can't. There are also functions which have points at which the tangent line is vertical (and therefore the derivative is undefined), such as x = y².

[LOLKILLERTOTHEDEATH 1,921]

A function must be continuous to have a derivative. Some continuous functions may not have a derivative at a given point. Take f(x) = |x| for example. To put it informally, the graph has a corner at x = 0. How do you draw a line tangent to a corner? You can't. There are also functions which have points at which the tangent line is vertical (and therefore the derivative is undefined), such as x = y².

Ahhhh. So, would a function such as x=3 have no derivative? Shouldn't it? 

[P.4.R.K.O.U.R 329]

1+1? Who answer get cookies from me

Depends on the view.

Normal maths: 1+1=2

C++ Program: 1&1=1

A fool: 1 and 1=11

[r_trooll15 827]

Depends on the view.

Normal maths: 1+1=2

C++ Program: 1&1=1

A fool: 1 and 1=11

It's actually 10

 

 

in binary

 

[Person_Random 4,991]

Ahhhh. So, would a function such as x=3 have no derivative? Shouldn't it? 

Technically, if you derive for x as a function of y, then the derivative is 0, but if you derive as y as a function of x, then the derivative is undefined.

 

 

 

It only takes a semester of calculus to do its good work.

 

 

Think of the days that I didn't understand limits.  Now I can do integrals.

 

 

 

 

Edited November 26, 2018 by Person_Random

[Guest]

Technically, if you derive for x as a function of y, then the derivative is 0, but if you derive as y as a function of x, then the derivative is undefined.

 

 

 

It only takes a semester of calculus to do its good work.

 

 

Think of the days that I didn't understand limits.  Now I can do integrals.

 

 

 

 

Nice! I'm trying to get to integration too. I've gotten to integration techniques (by parts, by substitution and by u substitution)

 

To confirm though, the reason for that is the slope of a vertical line is undefined and therefore the derrivative cannot exist? I'm not sure I perfectly get it, but I'll get there one day soon.

[u812ic 1,629]

All this boggles my mind. I'm still doing addition on my fingers. :lol:

[Person_Random 4,991]

Nice! I'm trying to get to integration too. I've gotten to integration techniques (by parts, by substitution and by u substitution)

 

To confirm though, the reason for that is the slope of a vertical line is undefined and therefore the derrivative cannot exist? I'm not sure I perfectly get it, but I'll get there one day soon.

Also, I haven't gotten to what you are doing right now, I think I will learn it in February.  As for the question, I believe so, unless you are integrating for y.

 

All this boggles my mind. I'm still doing addition on my fingers. :lol:

Takes time, practice and you will achieve.

[u812ic 1,629]

This is my take on the whole matter:

 

[Person_Random 4,991]

Math has a purpose, though.

[u812ic 1,629]

Yes, math has a purpose, no argument there. Algebra, Trigonometry, Calculus, Coefficient, fine, if you are going to be using it on an everyday basis for your work. But if your work doesn't demand it, then what good is if when you graduate from college?

 

My brother had to take algebra, trigonometry, and calculus to get into college. There, he had to take the advance courses even though he was going into Management. When he graduated he went into retail and, eventually, became District  manager of a large high end store chain. He never used all that math again. Many times he had wished that he didn't have to take all that math in college, because there were other courses he had rather taken that would have advanced him in his career a lot better. 

 

In my work, all I needed to do is be able to convert measurements to the metric system. Not once did I use all that high end math. If you like working with numbers and it gives you a welcomed challenge, then go for it. If you have the talent to be able to work with numbers like that, then your place in the world is to find a job that uses it. I'm not trying to discourage anyone from learning. Have fun with it. 

[666-Bigbrain235-666 84]

A square + B square = C rectangle

[Guest]

Yes, math has a purpose, no argument there. Algebra, Trigonometry, Calculus, Coefficient, fine, if you are going to be using it on an everyday basis for your work. But if your work doesn't demand it, then what good is if when you graduate from college?

 

My brother had to take algebra, trigonometry, and calculus to get into college. There, he had to take the advance courses even though he was going into Management. When he graduated he went into retail and, eventually, became District  manager of a large high end store chain. He never used all that math again. Many times he had wished that he didn't have to take all that math in college, because there were other courses he had rather taken that would have advanced him in his career a lot better. 

 

In my work, all I needed to do is be able to convert measurements to the metric system. Not once did I use all that high end math. If you like working with numbers and it gives you a welcomed challenge, then go for it. If you have the talent to be able to work with numbers like that, then your place in the world is to find a job that uses it. I'm not trying to discourage anyone from learning. Have fun with it.

 

I get your frustration but that is the thing about Maths I find increasingly more often. Mathematics isn't just a tool you use and formulas and numbers you crunch. It is so much more than that.

[u812ic 1,629]

Mathematics is the Universal Language.

Music is the heartbeat of the world.