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**1. Homework Statement**

http://www.individual.utoronto.ca/chy1013m1/a42.jpg [Broken]

**2. Homework Equations**

possibly Lagrange's multiplier..

**3. The Attempt at a Solution**

treating S = f(x1, x2, ... , x2006) = x1 * 1^1/3 + x2 * 2^1/3 + ... + x2006 * 2006^1/3

and constrain G(x1, x2 ... x2006) = x1 ^ 3/2 + x2 ^ 3/2 + ... + x2006 ^ 3/2 - (2^1/2 / (2006^1/2 * 2007 ^ 1/2)) = 0

then solve G(x...) = 0

gradient(f) = lambda * gradient(G) , which isn't all that clear what to do next.. any hints ?

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