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由完全立方公式有:(a-b)³=a³-3a²b+3ab²-b³
所以,原式=∫[1-x^(1/2)]³dx
=∫{1-3x^(1/2)+3x-x^(3/2)}dx
=x-2·x^(3/2)+(3/2)x²-(2/5)x^(5/2)+C
所以,原式=∫[1-x^(1/2)]³dx
=∫{1-3x^(1/2)+3x-x^(3/2)}dx
=x-2·x^(3/2)+(3/2)x²-(2/5)x^(5/2)+C
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