t方减1分之一的不定积分怎么求

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/06 07:34:42

t方减1分之一的不定积分怎么求

∫1/(t^2-1)dt
=∫1/(t-1)(t+1)dt
=1/2∫[1/(t-1)-1/(t+1)]dt
=1/2∫1/(t-1)d(t-1)-1/2∫1/(t+1)d(t+1)
=1/2ln|t-1|-1/2ln|t+1|+c

令t=secx ∫1/(t^2-1)dt=∫ctanxdx=Log[Sin[x]]+C=Log[Sin[Arccos[1/t]]]+C

∫1/(t^2-1)dt
=∫1/(t-1)(t+1)dt
=1/2∫[1/(t-1)-1/(t+1)]dt
=1/2∫1/(t-1)d(t-1)-1/2∫1/(t+1)d(t+1)
=1/2ln|t-1|-1/2ln|t+1|+C
=1/2ln|(t-1)/(t+1)|+C