Homework Help: MATLAB: How do you find the lagrange multipliers

1. Jul 25, 2012

math8

When I try to solve a linear program using matlab,after using linprog(f,A,b,...) I can find the Lagrange multiplier associated with the inequality constraints and the lower bound constraints by using:

lambda.ineqlin ; lambda.lower

But if I want to solve a quadratic program (using quadprog(H,f,A,b,...)), then how do I find the Lagrange multipliers?

I can see that to find the solution, you can use:
[x,feval,exitflag,output,lambda]=quadprog(H,f,A,b,...),

but the result for lambda, which I thought would give me the Lagrange multipliers, instead, itgives me a list of matrices sizes.

I don't understand that result for lambda.

How do I find the Lagrange multipliers for a quadratic program in Matlab?

2. Jul 26, 2012

chiro

Hey math8.

This might help:

http://www.mathworks.com.au/help/toolbox/optim/ug/brkvzon.html [Broken]

Last edited by a moderator: May 6, 2017
3. Jul 26, 2012

math8

Thanks!!

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