Recent content by Oscillation

Hi folks! I just read this article. Interesting read: History tells us what may happen next with Brexit & Trump (Updates to the site, ey? I haven't been here for a while)

Actual numbers never change. General konstants, however, may "change" our perspectives on this, since they are... general. They are konstants, yes, they don't change, but nevertheless they are general, so it can be what ever number you come up with, and so it feels as if it changes whenever you...

So I figured. It becomes a whole other issue when it comes to more complex physics though, such as Schrödinger equation, I think, as it is a complex differential equation. But nevertheless, thank you! I will read at reddit tomorrow.

BAM! According to a video I just watched (in swedish, sorry) the C1 and C2 are COMPLEX (real numbers are just complex without any imaginary part), so that means B would be REAL. Finally! So, the answer, according to this video and my own deduction, is that B is complex, and just happen to be...

They just give you the equation y'' - 4y' + 13 = 0, and goes ahead giving you the solution for it. This passage isn't that interested in the method in itself, but various forms of writing a solution. The real problem lies in the frase "We prefer, however, to write the solutions to the real form"...

Gaaaah! I know, it's frustrating! The imaginary unit i can't just vanish! If it's part of B, then B is complex. So why are they handling B as if it were real? Sigh. But, again, I suspect it's because of some basic nature to linear diff.equations, 'cause when you at first set y = Cerx you don't...

It goes the same as with real numbers: you set y = Cerx (or wich letters you'd like), and then solve the equation for r. If it happen's to be a complex or real number doesn't matter. It works the same way. "Solution" might be the wrong word, yes, but I'll stick with it. To solve a...

Oh, sorry. I know only some swedish sites. Wolfram Alpha though... that's a really handy site to visit. Yes! Right on! So to simplify the problem: How can iD = B, if both B and D are real numbers? B should be a complex number for the equation to work, but I guess it has something to do with...

Hahaha, yes, quite. "The answer to life, the universe and everything". :) For real though!

Hi! I figured some of you might have got into the mathematics at some point. Good for you(!), and good for me. I happen to have one simple question on one step they take in my textbook. The diff.equation y'' - 4y' + 13y = 0 has the solution y = C1e(2+3i)x + C2e(2-3i)x, so far so good. Then...

Would you kill someone that raped your whole family and killed them afterwards? Probably. Why? Moral is just something that only exists within the mind, so why? These questions are far more difficult than reason.

AAah, of course! That makes more sense. Stupid me :)

Does this work?

And that's why I love it: history repeats itself, in a new setting!

And here I tried to not show my own excitment over this movie, so that I wouldn't create too too high expectations in others. The point is I second what JJJA said here... I tried to hide it though.