Hi,
For someone who's familiar with LC's:
How to derive the expression for free energy density of an hybrid aligned LC cell? what should be the vector for the director?
I already familiar with the cases of splay and bend cell but couldn't understand how to derive it to the case where the cell is...
Hi all,
i need help solving the following integral using Matlab:
* tetam is a parameter and the integration is by alpha.
the answer should be function of tetam
* K33, K11 are constantsThanks ,
Chen
Hi,
im looking to simulate Bandgap diagram of an heterojunction of AlGaAs/ GaAs with metal schottky contacts.
can anyone please recommend me of a program that can perform this task?
i'll be glad to know.
thanks
Yes it's somehow related
I want to use the Wigner-Ville algorithm, so in order to do it i need to make my signal discrete .
since it's a complex exponential i don't know how to represent this complex signal as a vector
thanks,
Chen
Hi,
I want to transform a complex exponential with quadratic phase to discrete form, in other words to a vector form.
can anyone help me with that?
Thanks
1. I have the following setting of free space than a lense and again free space
i need to solve for the output field as in the figure attached.
3. i used the fresnel transform once and then multiplied the field with the exponential and then convolved all the field. still couldn't make it to the...
Hi i have have a small question regrading to a NPN BJT transistor.
the DC current gain (beta) is the ratio between Ic/Ib where Ic and Ib are the collector and base currents respectively.
Ib is the input current, that's alright , but, i don't get why Ic considered as the output?
in NPN BJT...
Yes you right X also should be taken negative.
i didnt understand the step between line 2 and 3
https://drive.google.com/file/d/0B4wgc0vIE7CCUmpXLXJ0TEtIeUU/view?usp=sharing
The thing is that i have an r.v (random variable) of the form Y=X^2
and by definition : fy(y)dy= P{y<Y<=y+dy}
i can substitute Y with (X)^2 and then i take the square root from both sides and get :
P{ sqrt(y)<X<= sqrt(y+dy) }}
now i want to show the PDF of X by the definition so i want to...
Hi da_nang thanks for your answer.
I think i didn't fully understand. In the Mirage function i set two inputs: the first one is the time interval for solving the problem.
the second will be a vector of initial conditions.
the line where " xprime=.." i must have mixed values of x(1) with x(2)...
Hi ,
I have tried solving the following system of ODE's (eq1 attached) using Matlab.
first i reduced it into a system of four 1st order ODE's (eq2 attached).
thani tried to solve it using ode45() in the following manner:
function xprime = Mirage(t,x);
k=2;
xprime=[x(1)...