0 1 ( 1 )不定积分 dx 可作代换( ( 2 - x A. x = sint C. x = 2sint 1 ( 2 )不定 ... + C. X = ( 3 )不定积分 JVR + 4dx 可作代换( A. X = sin 2 C. x = 2 tant 1 ( 4 ) ...
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