Recent content by chota

if i have to find the integral of sin(n*pi*x/L) * cos(m*pi*x/L) between 0<=x<=L is it true that this integral will be 0 every where except where n=m? please and thank you.

this isn't homework, this is just general knowledge and i can't figure it out.. please help, thx Find the Laplace transform of the given function: f(t) = { 0 t<2, (t-2)^2 t>=2 I tried working it out and this is where i get stuck f(t) = (t-2)^2 * u(t-2) I am not sure if I got the...

leenaa this solution is very straightforward so I am not going to solve it for you but I will tell you the steps you should do to get to the final solution. THis is a DE, u need to find y(t). Step 1) Find the laplace transforms for y'', y', y... note the LT of y is just Y(s) Find the...

Hi, I currently have this problem to solve and I can't seem to figure it out it goes like this Find the Laplace transform of the given function: f(t) = { 0 t<2, (t-2)^2 t>=2 I tried working it out and this is where i get stuck f(t) = (t-2)^2 * u(t-2) I am not sure if I got...

Hi say I have two "independent" Normal distributions, S ~ N(0,3^2) and D~(0,2^2) since I know that S and D are indpendent then P(S ) + P(D) = P(S)P(D) however we know they are both normal distributed so I amm just wondering what the general rule is for multiplying two normal...

Ok so I am asking for some help, please help. I don't know how to apply the formula given for Cauchy's Theorum, on the complex plane if anyone can show me a good website with examples on this topic, please tell me.. I am struggling and this is like a cry for help, please help. thank you

hi, I had a question regarding the rc4 stream cipher. I understand it is a bunch of permutations to the initial Array that goes from 0 to 255 with respect to the key. However is there such a key such that after the permutation S is still the same? (ie still goes from 0 to 255)? Any help...

Hi, I am currently studying complex numbers and I am at the part we have to find line integrals over a simple closed curve gamma(t).. I know the definition, but when i read a problem I am n ot sure how to parameratize the curve. I was wondering if there are some tricks to this. Would...

INtegrals!

Hi, I am currently studying complex numbers and I am at the part we have to find line integrals over a simple closed curve gamma(t).. I know the definition, but when i read a problem I am n ot sure how to parameratize the curve. I was wondering if there are some tricks to this. Would...

is the other thing integrals :P

a x c = b since b is a vector that is perpendicular to both a and c .. :-D

so you saying that a nxn matrix can only be written as K * I where k is a constant is if it's diagonal elements are the same. (ie a diagonal matrix where the elements in the diagonal is equal)?

np, good luck :-D

divide by 10 :/ 25/10 = 2.5 :/ not sure if this is write, just thought i'd try to help