Recent content by mkkrnfoo85

Hi, if I have the confidence interval for the point estimate of an option price A which was found through simulation, can I also find a confidence interval for delta (dA/dS), where S is underlying asset price, without further simulation? thanks, sl

hey, thanks everyone. it helped improve my conceptual understanding of bjt transistors. -Mark

Hey, I would like help understanding this scenario: (1) base-collector voltage, V_BC, is reverse-biased (2) base-emitter voltage, V_BE, is forward-biased (3) collector current, I_C, is negative Normally, if I_C was positive, I would assume the transistor to be in the forward-active...

awesome. Just the kind of thing I was looking for. thanks for the link. -Mark

Hey, thanks for the reply. Yea, I heard about that mit lab being able to light a bulb. I had no idea the coils were so huge tho.. puts things in perspective. Okay, I just saw the picture. The coils are huge. It doesn't seem like they require a lot of turns tho (~5). Doesn't look like...

Hey, thanks for the reply. Sorry about my long post, I am using a 4-diode bridge with a smoothing capacitor (100 uF). So, I guess my problem would be the need of a ferrite core to increase mutual inductance, which is of the form: M = N_1*N_2*P N1 = coils of L1 N2 = coils of L2 P =...

Hello, I am trying to make two single-layer air cored coils in order to transfer power from one coil to other through mutual inductance. I've had a really tough time trying to come up with some theoretical guidelines for my experimentation. For example, I've found empirical equations...

So, here's the motivation to my problem: I have this following equation: P(u) = \frac{u^n}{1+u+u^2+...+u^n} , 'n' being a given constant. I figured out that I could simplify the power series on the denominator, and get a better solution for P(u): P(u) = \frac{u^n-u^{n+1}}{1 - u^{n+1}}Now...

oh that helped a lot. Thx, cristo and halls, and thanks for the correction. I got to the conclusion: n(u^2-2ux_{avg}) == n(u^2-2ux_{avg}) =). I had one more question. I need to know this relation to use in a proof in my 'probability' class. Is there an intuitive way to look at the...

Hello, I am really bothered by this because I can't seem to be able to prove the following is true. \sum_{i=1}^n (x_i - u)^2 = \sum_{i=1}^n (x_i - x_{avg})^2 + n(x_{avg} - u)^2 for u = constant and x_{avg} = \frac{\sum x_i}{n} I just can't seem to grasp how I can prove that the...

Hello, just a bit insecure about my answer. Problem:------- Suppose n people have throat cultures, and the cultures are then completely mixed up. If we randomly pair off the n peoples’ names with the n cultures, what is the expected number of correct labels? --------------- So, here's my...

ah thanks guys. :wink:

Hi, I was given a problem by the professor, and I feel like I do not know where to begin. Well, here is the problem: -------- Endless, parallel East-to-West lines are spaced 2 inches apart on the ground, and a needle of length 1 inch is randomly tossed on the ground. Compute the probability...

thx for the reply. My research interests are in bioinformatics. Anything that involves the use of mathematical modeling, computer science, and signal processing to model biological systems. I'm mainly looking for a summer research position that would be at a school other than Hopkins, with an...

yea, i realize johns hopkins is a good place for biomed. funny thing, i actually happen to be a biomed undergrad at hopkins :redface: , but would like to look elsewhere for research opportunities this summer. any ideas about how i can maximize my chances as an mit research assistant...