Answered
Solve non-linear equation with 2 unknowns and lb/ub constraints
to get the min instead of max you have to put a minus in the objective (and yes this is annoying) but if you just try to maxi...

7 years ago | 0

Answered
Question about fsolve
first of all you should delete the /M in the objective, because this only scales your problem in a bad way. another problem cou...

7 years ago | 0

Answered
fminsearch with boundary conditions on parameters
in the file exchange there is an fminsearch with boundaries (fminsearchbnd) i assume you dont have the optimization toolbox, ...

7 years ago | 0

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Answered
Non-negativity for unconstrained nonlinear multivariable function
if you want your inputs to be positive, just add them as a lower bound, see documention. For example if your x is a vector of th...

7 years ago | 0

Answered
a question on fsolve
the problem in the first case is that matlab assumes that every x will show up in every equation. In other words, it will try to...

7 years ago | 0

Answered
fmincon and constrains
if you want to minimize all the values in the vector, you can sum them and use that as your objective.... about the not equal...

7 years ago | 0

Answered
fsolve with multidimensional array and x0
if you want to stick more to your orginal formulation: the problem is that your x0 has to be a vector, not an array, so you will...

7 years ago | 1

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Answered
syntax of fsolve
you should write it as a function (in either anonymous function, function file or subfunction if your main program is also a fun...

7 years ago | 0

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How do I set my fmincon constraint parameters?
you can insert them as nonlinear constraints (as functions, see the documentation).

7 years ago | 0

Answered
Equation solving problem
im sure we can help you very well with this what do you have so far? or which part is difficult for you? anyway, we have ...

7 years ago | 0

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Answered
need help with optimtool
although this does not matter much, you should add an 'end' how do you call obj.m with fmincon? and where did you store obj.m...

7 years ago | 0

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Answered
need help with optimtool
apparently you somewhere call a function "obj.m" with an 'double' input and this is not allowed we can't help much more if yo...

7 years ago | 0

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Using "fmincon" function and show "busy" all the time!
fmincon does terminate at some point unless it gets stuck inside an iteration. what i am saying is that there is some logical ex...

7 years ago | 0

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"Vectorized" fsolve
first of all, if you loop through R and use the solution of the last loop as starting value, that will already help quite abit (...

7 years ago | 0

Answered
fmincon violates nonlinear inequality during search
No there is not. You will have to be innovative yourself to avoid this from happening...

7 years ago | 0

Answered
Robustness with fminimax
they way you present the problem now, you could just replace x(1:n) with y(1:n)=x(1:n) + r(1:n) in the orginal problem.... i...

7 years ago | 0

Answered
fmincon function ( constrained nonlinear multi-variable optimization)
about the input variables: dont use them as global variables (as a rule,only in special cases use global variables). i dont know...

7 years ago | 0

Question

Select all entries in first N-1 dimensions of array
hi, i have a loop in which cell array V keeps expanding: for it=1:10; V{it}= ..... % the number of dimension of V{it} ...

7 years ago | 1 answer | 0

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answer

Answered
fsolve and indexing
i think you want to use cell arrays to store the vectors of the solutions: C{i,j}=fsolve(....) to call the content: C{i,j...

7 years ago | 0

Answered
Using fminunc()
what do you mean, you can't write it down? you can create a function file if the function is hard to capture in one line: fo...

7 years ago | 0

Answered
Using fminunc()
what do you want? what is the function you want to optimize for? fminunc searches for a minimum, but for instance x1+x2 is unbou...

7 years ago | 0

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Answered
Constrained nonlinear regression
lsqnonlin

8 years ago | 0

Answered
Sorry but cannot fsolve this and don't know why
fsolve can only find local solutions. like the exit message says: it finds a local minimum but it is not 0. So you should try a ...

8 years ago | 0

Answered
what changes i need to make for better answer (fmincon)
-22 is better than 0, so the solution fmincon found is better than what you want... why would you want 0 if the optimum (lowest ...

8 years ago | 0

Answered
how to solve equations?
you can use fsolve to solve equation, but note that it will only find 1 local solution. it seems that in in your case there is a...

8 years ago | 0

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Answered
Reduce the numbers of inputs in a numerical function
use passing of parameters: function value=my_fun(x,y,z); end then you make an anonymous function: x0=... y0=... my_fun_z...

8 years ago | 0

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fmincon trying to evaluate a vector full of NaN
maybe you can post important bits of your codes? (or the whole code?) if you use finite differences, one possible cause is th...

8 years ago | 0

Answered
How do i solve minimax optimization problem?
to solve a minimax program you will have to rely on 'fminsearch', file exchange or write you own optimization routine (this migh...

8 years ago | 0

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Answered
non linear data fit (weighted least square)
check: -lsqcurvefit -lsqnonlin (both are in optimization toolbox though) im not sure how you want to take account of t...

8 years ago | 0

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Answered
??? Index exceeds matrix dimensions.
the error says that matlab tries to evaluate an element in an array, but the array is smaller than the index it tries to acces.....

8 years ago | 0

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