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answered 2012-04-15 17:19:02 +0100
sage: f = lambda x:-4*x^6/(x^4 + 1)^(3/2) + 6*x^2/sqrt(x^4 + 1) sage: find_maximum_on_interval(f,0,2) (2.8284271247461898, 1.0000000183339277)