MATLAB: How to maximize system of linear equations

maximize system of linear equations

Hello,

Given:

A=[4 3; -1 7; 5 9; 2 4];

x=[x1;x2];

b=[b1; b2; b3; b4];

How can I maximize the linear system of equations: Ax=b?

Best Answer

You can use fminimax, e.g.,

fminimax(@(x) A*x, x0)

Related Solutions

MATLAB: Fmincon constraints error: Aeq must have 81 column(s).

See this example. This consider random values for matrices A and B in fun

rng(0);
A = rand(9);
B = rand(9);
fun = @(x) norm(A*reshape(x,9,9) - B);
rng(4)
x0 = rand(1,81);
lb = zeros(1,81);
ub = ones(1,81)*0.999999;
A = [];
b = [];
Aeq = repelem(eye(9),1,9);
beq = ones(9,1);
nonlcon = [];
options = optimoptions(@fmincon,'Algorithm','sqp','MaxFunctionEvaluations',5000);
x = fmincon(fun,x0,A,b,Aeq,beq,lb,ub,nonlcon, options);
x = reshape(x, 9, 9);

MATLAB: How to make a code that will count the number of times the sign changes succesively through an array

 pos = DAX>0;
 changes = xor(pos(1:end-1),pos(2:end));
 num = sum(changes)

Best Answer

Related Solutions

MATLAB: Fmincon constraints error: Aeq must have 81 column(s).

MATLAB: How to make a code that will count the number of times the sign changes succesively through an array

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