求∫(arcsinx)^2dx=?
求∫(arcsinx)^2dx=?
数学人气:621 ℃时间:2020-04-09 04:15:35
优质解答
令arcsinx=t x=sint ∫(arcsinx)^2dx =∫t^2costdt =∫t^2dsint =t^2sint-2∫tsintdt =t^2sint+2∫tdcost =t^2sint+2(tcost-∫costdt) =t^2sint+2(tcost-sint) ∫(arcsinx)^2dx=x(arcsinx)^2+2(arcsinxcos(arcsinx...
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