# MATLAB: How do you find the lagrange multipliers

by math8
Tags: lagrange, matlab, multipliers
 P: 161 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?
 P: 4,568 Hey math8. This might help: http://www.mathworks.com.au/help/too...g/brkvzon.html
 P: 161 Thanks!!

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