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∫1/(X^2十2X十2)dX=
人气:351 ℃ 时间:2020-05-11 21:30:14
解答
∫1/(X^2十2X十2)dX
=∫1/[(x+1)^2+1]dX
=∫1/[(x+1)^2+1]d(X+1)
=arctan(x+1) +C
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