How to find the minimum value of this expression?

Question:How to find the minimum value of this expression?

Posted: toandhsp 300 Product: Maple

April 28 2013

Let x, y, z be three nonnegative numbers and x^2 + y^2 + z^2 = 5. Find the minimum value of the expression

A = 1/2*x^2*y^2 + y^2*z^2 + z^2 *x^2 + 96/(x + y + z + 1).

How to find the minimum value of the expression?

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