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We'll be meeting them at the airport.
We'll be seeing our friends in the summer.
What will you be doing tomorrow?
像这样的加be是做什么讲？
网校学员cly**在学习英语零基础直达大学六级【12月特惠班】时提出了此问题，已有1人帮助了TA。
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yym121mmy
同学你好，该知识点来自沪江网校《英语零基础直达大学六级【12月特惠班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
原式=∫(sinx)^(-3) dx =∫[-1/sinx]dcotx=-cotx/sinx+∫[-cotx*cosx/sinx*sinx]dx
=-cotx/sinx- -∫(sinx)^(-3)*[1-sinx*sinx] dx
=-cscx*cotx+ln|tan[x/2]|-∫(sinx)^(-3) dx
所以原式=[-1/2]*cscx*cotx+[1/2]*ln|tan[x/2]|+c
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英语零基础直达大学六级【12月特惠班】
已有10人在本课程中发现了177个知识
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