I have been trying to make an integral in open modelica. The integral that I would like to solve is the following:
W_fluido=Q/3600*∫〖Cp_fluido*dT, [Ti-Tf]
Where Cp_fluido= =(A+B*((C/T)/sinh(C/T) )^2+D*((E/T)/cosh(E/T) )^2))
I hope someone can help me
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I am trying to replicate the standard errors that Eviews calculates in linear regression models forecast. I have used the classical standard error formula, but it is not the same. After some research I found this formula:
I couldn't figure out how to replicate.
I appreciate if someone could help me.
Thanks!
I am using CPLEX for MATLAB toolbox wherein I formulate my MILP as a huge matrix and use the function cplexmilp to call the solver. Since the model I am solving is really huge, I intend to set the option of using multiple processors to speed up the solving of the MILP. I went through the manual but I could not find any specific solution for my case. I'd be grateful if anyone could help me find a solution to this issue.
CPLEX Toolbox Function
Thanks Everyone
I have been trying to solve this equation analytical, where C and L is constants:
There is no problem with the general solution, but with the conditions, the expression is close to unsolveable.
Now I'm trying to solve the problem with Matlab, where I believe i shall use the ode45 solver. I just don't know what to do with the integral and omega which is the value I'm trying to find.
I know that i haven't given any code snippet, but I just can't figure out how to solve this problem in Matlab.
I hope someone can help me, thanks.
This question is regarding MATLAB implementation of the solution to IDE.
Consider IDE:
where the K(r',r,\theta) is the Kernel of the integration. Is there a simple implementation of the solution to this kind of equations? I know how to solve it in general, but I'm wondering if you could suggest something simpler and well implemented in MATLAB.
The following equation is to be solved for M by MATLAB:
(Atemp/At)^2=1/M^2*((2/(gamma+1))*(1+(gamma-1)*M^2/2))^((gamma+1)/(gamma-1))
It is not possible to solve this equation symbolically. In Maple it is easily possible to solve such an equation implicitly; now, is there also a pre-made function in Matlab that does this for me? I could program one myself, but as my skills are limited, its performance would not fit my needs.
I would try using fzero, or if that encounters problems because of complex values/infinities, fminbnd.