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maximize { (e^(.1x^2 + .4x) + 5cos(pi * x) - sqrt(x^2 + 1) - 4) / x } for 3 < x < 5
maximize { (e^(.1x^2 + .4x) + 5cos(pi * x) - sqrt(x^2 + 1) - 4) / x } for 3 < x < 5
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