I want to solve this problem:
but as this problem is concave and nonlinear, I have problems using prob = optimproblem and fmincon. can you help me to solve it?
Related
my problem is the following.
Using linsolve function I am solving an overdetermined matrix 200x50 with very similar elements. Because of this, the solution that I get is not correct. Maybe some of you would have any suggestions how to solve such a system?
Best wishes,
Valerie
It's very likely that your system does not have a solution.
Rather than attempting to solve the system A*x=b, the next best thing you can do is to solve a similar problem:
min norm(A*x-b)
When the norm used is the Euclidean norm, the solution to the minimization problem is called a "Least-Squares solution"
The MATLAB syntax is:
x = A\b
I have an optimization problem shown in uploaded figure file.
Determining the optimal matrix X maximizing given objective function is the problem.
However, since the function inside the log-function is non-concave, MATLAB CVX doesn't work.
How can I solve the problem? How should I transform the form?
Please give me a hand
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.
I have to solve a nonlinear constrained function in matlab. and I am not familiar to it's command.
the problem is:
minimize E(b,c)
constrains k1< c.b^0.5< k2 and c/6>k3
note: E(b,c) is a nonlinear function; also how can I solve this easier one
minimize E(b,c)
constrains c.b^0.5=k2 and c/6>k3
I must use matlab mfile. please suggest me what should I do!
for simplicity imagine: i.e. E(b,c)=b^2+√c+c and k1=8,k2=12,k3=5
I must use Matlab mfile. Please suggest me what should I do!
I would like to plot the E(b,c) based on given constraints and find the b,c pairs, if that is possible.
I am not sure if I really need optimization toolbox or not.
Please give me a short Matlab script if it's ok.
thanks in advance
Your problem seems to be non-linear constrained optimization. Check, if your objective function is convex or not. Save you objective function and constraints in an m.file. Use optimization toolbox, select a solver that best suits your problem [Please refer http://in.mathworks.com/help/optim/ug/choosing-a-solver.html?refresh=true for choosing the right solver and right algorithm.]
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.