Recent content by Shawj02

Yep, you're right! I've got it working perfectly now! My other question is: How do I write the ABS and REALS in LATEX? (so I can post things on physics forms better) so far I've got: \sum _{j=1}^z (-1)^j x_{j-1}-\sum _{j=6}^z 1+n_0 (-1)^z

I been playing around with the LATEX thing.. using Mathematica's right click and "copy as Latex" function. I have attached a copy of my original equation, below is an attempt to convert it into Latex. \sum _{z=1}^z (-1)^z x_{z-1}-\sum _{z=6}^z 1+n_0 (-1)^z There seems to be a...

Hi guys, I have a problem with Mathematica. The equation (see attachment) is SUPPOSE TO give: n[0]=n0 n[1]=x0-n0 n[2]=x1-x0+n0 n[3]=x2-x1+x0-n0 n[4]=x3-x2+x1-x0+n0 n[5]=x4-x3+x2-x1+x0-n0 n[6]=x5-x4+x3-x2+x1-x0+n0-1 ... But when I put in n[1] I get the following errors and output: Sum::itraw...

ahhk, yeah that works. you could have explained it more but I got it in the end. I'll fill in the gaps for anyone else who might look at this in the future. use Ef=((khbar)^2)/2m to get the it to look right. and the big integral, you need to know that f(E) = 0 for E>Ef and f(E) = 1 for...

Show that the kinectic energy of a three-dimensional fermi gas of N free electrons at absolute zero is (Mathematica code used) u = 3/5 N Subscript[\[Epsilon], F] Now I know total energy of N particles is this integral u = \!\( \*SubsuperscriptBox[\(\[Integral]\), \(0\)...

ahh, wait. i think I get it. solving for basis write 0,0,-5,3 4,7,-1,6 0,1,2,0 rearrange 4,7,-1,6 0,1,2,0 0,0,-5,3 Becomes 4,0,0,-33/5 0,1,0,6/5 0,0,-5,3 so a basis is (4,0,0,-33/5),(0,1,0,6/5),(0,0,-5,3)? And simplest (aka standard basis?) would look like...

ok, so i'll try for the basis again. 0,4,0 0,7,1 -5,-1,2 3,6,0 switch column 1 and 2 around. 4,0,0 7,1,0 -1,2,-5 6,0,3 row reduce 4,0,0 0,1,0 0,0,-5 0,0,0 so a basis is {4,0,0,0},{0,1,0,0},{0,0,-5,0) or more simply {1,0,0,0},{0,1,0,0},{0,0,1,0}? So was that the only...

One more thing... Ok, So from what I've read, If the vectors are written across a row like 4,7,-1,6 0,1,2,0 0,0,-5,3 Applying any operations (column wise) to this will not correspond to things that are meaningful in the original vector space, correct? The only useful information we can...

x3 and x4, i meant collumns of the matrix (-1,2,5) and (6,0,3).

Ok from other posts, everyone seems to say that it doesn't matter if you stick vectors into a matrix via columns or rows. So i want to prove this to myself using an example from my notes. The only problem is, I get different answers. Can someone correct me? from my notes it says "show (0...

Hi, My question is concerned with vectors, null space, solving for independence and subspaces. Now, I've found If a question gives a set of vectors and asks find if they are independent or not The vectors are written in columns (to make a matrix) and then Gaussian elimination is applied...

Im stuck in the same boat, but trying to get the partial fraction for "(e^[-s] -e^[-2s])/[(s^2)(s+1)]" I wasn't too sure what EngageEngage meant.

Ok, the question says Binomial with n=40. p=0.6 use normal approximation and determine.. a) value at 14. b)value lest then 12. So I thought I had this down and packed but the answer in the back of the book tells me otherwise. Anyways the following is my working. Y~Nor(13.5<x<14.5)...

Awesome. Yeah, I understand how. Just had a block a guess. Thanks.

Ive got P(A)- P(AnB^c) + P(A)- P(AnC^c)= P((AnB)U(AnC)) Anyone want to double check me?