Recent content by Gott_ist_tot

I'm trying to study geometric algebra using Artin's book and am having some difficulty with what degenerate symmetric bilinear forms would be like. Does someone know of an example and brief explanation. Also, the opposite being "nondegenerate nonsymmetric bilinear form" would help me out. If I...

I must be missing/not understanding something here. E[X] = 0.5(50n*2^(-n-1)) - 1.0(50n*2^(-n-1)) = -25n * 2^(-n-1) I tried finding a maximum but I had no luck. The 50n is the number of magazines. 2^(-n-1) is the probability. Then the 0.5 is how much he would make from a sell and the -1...

Oh, yes. He forgot to write the cost to sell them and it was amended. It is $1 for him to buy it and $1.50 is what he sells it for. The "sensible" through me off also. Hopefully the price will help. I will start looking at the expectation.

Homework Statement A newsagent finds that the probability of selling 50n copies of a certain magazine is 2^{-n-1} for n = 1,2,3,... What is the largest sensible number of copies of the magazine that they should stock. Homework Equations The Attempt at a Solution I really don't...

Yeah, I might just have a short somewhere that I can't find. The reason I thought it wasn't working is that the output signal (at the antenna for the complete circuit) is the exact same with or without an input from a function generator. I can definitely see the correct input signal just before...

Wow, thanks. That was really helpful. One other question came up. You may not be able to answer this. It may not even be a question to ask here. I plan on emailing the drawer of the circuit. But there seems to be a RC circuit missing (R5 and C5). From what I've seen on the circuit, my preamp (Q1...

Hi, I am attempting to figure out how an FM transmitter I'm building works. I was wondering if anyone had some suggestions on a resource for transistor circuits or just has some ideas of how to go about figuring it out. If anyone is interested, here is the schematic...

Homework Statement A random variable has distribution function F(z) = P(y<= z) given by (this is a piecewise function) f(z) = 0 if z < -1 1/2 if -1 <= z < 1 1/2 + 1/4(z-1 if 1 <= z < 2 1 if 2 <= z What is P(Y = 2)? Find all the numbers t with the property that both P(Y <= t) >=...

Sorry, for the bad arithmetic. That is fixed. The problem statement is a piecewise function. As for the rest of the notation. I don't know how else to write it. My professor said this usually isn't presented in textbooks in this manner but he thinks it is a good way to do it. So the notation may...

Homework Statement A random variable has a distribution function F(z) given by F(z) = 0 if z< -1 F(z) = 1/2 if -1 <= z < 2 F(z) = (1-z^{-3}) is 2 <= z Find the associated mean and variance. The Attempt at a Solution I drew the distribution function. I started with the associated...

n approached infinity. But what you said did it. Thanks.

Homework Statement Prove using limit theorems that lim \frac{10^n}{n!} = 0 Homework Equations We get to use limit theorems. These include 1 lim(a+b) = lim a + lim b, 2 lim(ab) = lim(a)lim(b), 3 lim(s_n) = \infty iff lim(1/s_n)= 0, 4 lim(ks_n) = k*lim(s_n) 5 if lim(s_n) = \infty and...

Homework Statement An urn contains 3 white and 4 red balls. A ball is chosen at random ( in a frequency sense) and replaced. What is the probability of the first 5 balls chosen exactly 2 will be white. Homework Equations The Attempt at a Solution Really I haven't made much...

Switching majors your first year isn't bad. Just curious, how is that being fit into a CV? Did you do research or come out with some degree in EE? If you accomplished something in EE this can't look bad on a CV.

It sounds like a few people are having a tough time. Here is a link that I always liked about studying physics. I will hope the other person who was having difficulty will also see this http://www.lhup.edu/~dsimanek/chapman.htm A lot of these are things you probably already do, but it might be...