Recent content by thomas49th

Hello, I'm interested in building a small non-invasive battery powered device that wraps around a pressured 1/2" pipe for measuring potable water. From https://en.wikipedia.org/wiki/Magnetic_flow_meter and watching youtube videos, it seems they all use electrodes which contact the liquid...

Ahhhhhh thank you thank you. That is making more sense now

thanks, I pretty much got it in the end, but there is one thing I'm still not happy about. Each p(k) = chance of it appearing k times * (1-chance of getting zero) In normal trials of a flipping a coin, if you have n trials and you want to find the probability of flipping k heads then you would...

I've already had a look at the iitg.ernet set, but I don't understand the part "The following relations hold for the product form trial". What are they saying there? http://gyazo.com/6856a335119c3762369bfc5ef06b213f

The only textbook I have doesn't have the details to this. Can you show me what these linear equations look like? I have n equations (n is queue length), I can't picture what I'm going to get out of this.

Homework Statement Consider a network of n queues with a Poisson arrival process of parameter t from outside the network, and independent exponentially distributed service times of parameters r1 to rn. Customer that first arrived to the network initially join queue i with probability Pi...

what the taylor expansion of? e^x ?

why do those terms exist? was there some kind of taylor expansion?

Hello, I've been looking at the derivation of the exponential function, here http://www.statlect.com/ucdexp1.htm amongst other places, but I don't get how, why or what the o(delta t) really does. How does it help? It's really confusing me, and all the literature I've looked at just...

Homework Statement On a 8x8 chess board format an Integer program to optimize the amount of knights required such that every square is covered by at least one knight. Homework Equations I know of a similar problem where we use duality for the placing 5 queens such that the maximum...

All good upto here I feel like a complete incompetent. p-n=X. So we set p = 0. n = -X. Ok the first bit makes sense but I don't understand how I can "note" -X = |X| > 0. You're saying that -X is the same as |X| (when the modulus of X is greater than 0 (aka X is not zero)). Maybe you already...

Thanks for the help, But I'm not making the mental link So far I know we can write |a-2b| as 2 inequalities y ≥ a-2b and y ≥ 2b - a But I don't see how the equation yp - yn = a - 2b comes about, nor why we then go onto maximise yp+yn Thanks Thomas

sorry yeah equality as opposed to inequality, so it's 5 at y+ = 0, y- = 5. So where are you trying to lead me to here? Thanks Thomas :P

The minimum is 5 in the first case and 0 in the second yes?

So basically yp - yn = 5 is a constraint along with yp, yn >= 0. my objective function is yp+yn But how does a - 2b = 5 fit in here? What is the translate between y+ and y- and a and b? Thanks Thomas