2012-10-29, 01:26 AM
Okay.
That means both f(1,1) and f(-1,-1) are both minimums because fxx = 10 (which is greater than 0), and there are no maximums.
I guess I was confused because I had just done another problem by solving for x and y, which had λ in its value, and substituting that into the constraint and solving for λ, then substituting that value into the x and y equations.
Can anyone explain what a lagrange multiplier is and how/why it works? I don't quite understand the textbook/wikipedia/google explanations.
That means both f(1,1) and f(-1,-1) are both minimums because fxx = 10 (which is greater than 0), and there are no maximums.
I guess I was confused because I had just done another problem by solving for x and y, which had λ in its value, and substituting that into the constraint and solving for λ, then substituting that value into the x and y equations.
Can anyone explain what a lagrange multiplier is and how/why it works? I don't quite understand the textbook/wikipedia/google explanations.