f(x) is a continous function in R.

i need to prove that if f(x)>=x^{2}for every x at R, so f(X) gets a minimum at [0,infinty).

thanks!

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- April 9th 2013, 12:32 PM #1

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- April 9th 2013, 02:03 PM #2

- April 11th 2013, 11:53 AM #3

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- April 11th 2013, 12:02 PM #4