Recent content by Dr_Pill

Matlab rook here, Suppose I'd want to plot the Gaussian for 10 different values for n:function gauss(c,n) = plot_gaussian.m x=-1*c:0.1:c; gauss(x,j)=sqrt(j./pi)*exp(-1*j.*x.^2); for j=1:n plot(x,y) end And then I'll type gauss(3,10) to plot 10 curves in the interval [-3,3] Also, if I'd...

Simple question; Why isn't it \sum am (from m=1 to infinity) Thanks in advance.

Yes! Thank you. :)

Got a tip, I guess. There's a mushroom with a potent ability to induce neurogenesis by promoting NGF's. It's name is Lion's Mane and it's used in the Asian kitchen. There has been some research on this mushroom, search Pubmed + Hericium Erinaceus on Google. Never tried it myself however.

Yes, I did three standard physics courses, that covered the whole Serway with Modern Physics + Giancoli. Want to broaden my knowledge, from basic physics to intermediate.

I tried to check x²-1 = (x+1)(x--1) So I did the following: Matlab returns 0. Any suggestions? :) (Matlab beginner by the way)

It's not Goldstein. But from Marion Jerry, but ok, will check errata. Just saying that x1,x2,x3 are equivalent to x,y,z in the Cartesian plane.

I added the 'extreme' part to generate a cool acronym: P.E.P. I want to review/learn as much as I can from physics & mathematics, in my spare time(!). I started out with quantum mechanics & solid state physics, yet I discovered that my notions of classical physics are poor. So I turned to...

This is an image of Classical Dynamics of Particles & Systems, chapter 1 In deriving the equations for the rotation of a coordinate system I understand the equations 1.2a & 1.2b b, but why is the projection of x2 on the x'1 equal to ab +bc and why is the vector de equal to the vector Of? I...

Incredible.

My god.What a mistake. It's been a while since I've encountered calculus. I better review the basics thoroughly than tackling some more advanced stuff. Excuses!

I understand it from a classical viewpoint, like the flow of a fluid. But shouldn't an electron obey the rules of QM? How is teleporting from one place to another forbidden in QM, wat about tunneling.Where is your continuous flow now? What about Quantum Entanglement. I don't get it.This...

What do you mean by cup? Real men drink their coffee in a mug. (5 mugs a day, here)

Hi, I'm studying calculus of variations, this is a bit of a recap of regular calculus. You got a function, but you plug a vector that is parameterized so your function becomes parameterized, then you take the derivative in 3.5, and then they say: put the parameter to zero in 3.6, but then you...

Think these two songs are their weirdest/most offbeat: D'yer Mak'er: Led Zeppelin Goes Ska/Reggae https://www.youtube.com/watch?v=UsmUTSG6cCY Carouselambra: Led Zeppelin Goes Prog https://www.youtube.com/watch?v=0ZMaM11hxDY Can't we change the subject of this thread to 70's hard...