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## Homework Statement

The problem initially was a Lagrange multipliers question, and I'm trying to solve for λ. I have an equation in terms of λ alone, but I just can't solve it. I plugged it into Wolfram Alpha and it gave me the λ value in the back of the textbook, but I still don't know how to solve the equation myself.

## Homework Equations

4(1/2λ)^2-λ=0

## The Attempt at a Solution

4(1^2/2λ^2)-λ=0

4/2λ^2=λ

2/λ^2=λ

And I don't know where to go from here