∫1/(X^2十2X十2)dX=

问题描述:

∫1/(X^2十2X十2)dX=

∫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