Recent content by kuahji

Thanks for the feedback! This is the one the professor is assigning for the class and was just hoping for one or two supplemental resources.

Just curious if anyone has any good recommendations for books or resources on Linear Partial Differential Equations. Thanks.

Okay, just figured it out. Thanks everyone for the assistance.

National Geographic is featuring this star trail picture this week on their wallpaper page (found here http://ngm.nationalgeographic.com/your-shot/weekly-wrapper/2012/img/0812wallpaper-week-4-1_1600.jpg). In the picture though I was wondering why the star trails appear so much more dense on the...

Typo, fixed it above.

We have three events A, B, and C such that P(A|C)\geqP(B|C) and P(A|C')\geqP(B|C') Prove that P(A)\geqP(B). First I started with, P(A|C)=P(AC)/P(C) and similarly P(B|C)=P(BC)/P(C). From above, P(AC)/P(C)\geqP(BC)/P(C) and since P(C)\geq0, P(AC)\geqP(BC). Similarly from above...

Did a search on statistical textbooks on the forum but did not find much except introductory statistical textbooks. Just curious as to what are some of the better intermediate to advanced level statistics textbooks on the market?

If we know t>0 then what is the best way to integrate this problem, without computer help?

That was easy enough, thank you for the tip!

Find the expectation value of the potential energy in the nth state of the harmonic oscillator. This is his example 2.5 in the book, he uses a\pm=1/Sqrt[2hmw](\mpip+mwx) to get x=Sqrt[h/2mw](a_{+}+a_{-}) My question how does he do this? I can't seem to make the algebraic manipulations to...

Nevermind, I went through the integral, it came out correctly... though it wasn't pretty.

In general I just wanted to see if I was setting this problem up correctly. We have a cube centered around the origin and a point charge at the origin. The task is to find the flux & confirm Gauss' Law. We are however to complete the integral ourselves. So imagining the top of the cube...

So a friend of mine baked some cookies, then noticed some patterns on the baking pan. The person asked me what caused these patterns, or even if they are just random... any ideas? http://imageshack.us/photo/my-images/94/34124410150294532442373.jpg/

Consider 4 charges all of magnitude q located at the following positions: r1 = (+1; +1; 0) ; r2 = (-1; +1; 0) ; r3 = (-1;-1; 0) ; r4 = (+1;-1; 0) We now want to study the stability of such an equilibrium conguration against small displacements. Show that near the origin the potential...

It was a decent popular account on the subject, I read it about two years back.