-4x²(0.5 2/5*(0.5x-x²) (0.8 2ln(2))(0.5-x)) 8(0.5-2.235(0.5-x))ln(0.5)(1-x)(0.5 2/5*(0.5x-x²) (0.8 2ln(2))(0.5-x))-(1-x)((0.4(0.5-2x)-(0.8 2ln(2))))

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