三道不定积分的题,会的帮我解答下,要过程!1. 求值:∫(1+sin(x/2))^2dx 注: ^表示乘方2.求值: ∫[1/(3+cosx)]dx 这题我用cosx=2[cos(x/2)]^2-1做的替换,可是化到(1/2)∫(1/{1+[cos(x/2)]^2})dx就不知道
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 02:49:22
![三道不定积分的题,会的帮我解答下,要过程!1. 求值:∫(1+sin(x/2))^2dx 注: ^表示乘方2.求值: ∫[1/(3+cosx)]dx 这题我用cosx=2[cos(x/2)]^2-1做的替换,可是化到(1/2)∫(1/{1+[cos(x/2)]^2})dx就不知道](/uploads/image/z/7650979-43-9.jpg?t=%E4%B8%89%E9%81%93%E4%B8%8D%E5%AE%9A%E7%A7%AF%E5%88%86%E7%9A%84%E9%A2%98%2C%E4%BC%9A%E7%9A%84%E5%B8%AE%E6%88%91%E8%A7%A3%E7%AD%94%E4%B8%8B%2C%E8%A6%81%E8%BF%87%E7%A8%8B%211.+%E6%B1%82%E5%80%BC%EF%BC%9A%E2%88%AB%EF%BC%881%2Bsin%28x%2F2%29%EF%BC%89%5E2dx+++++%E6%B3%A8%3A+%5E%E8%A1%A8%E7%A4%BA%E4%B9%98%E6%96%B92.%E6%B1%82%E5%80%BC%EF%BC%9A+%E2%88%AB%5B1%2F%283%2Bcosx%29%5Ddx+++%E8%BF%99%E9%A2%98%E6%88%91%E7%94%A8cosx%3D2%5Bcos%28x%2F2%29%5D%5E2-1%E5%81%9A%E7%9A%84%E6%9B%BF%E6%8D%A2%2C%E5%8F%AF%E6%98%AF%E5%8C%96%E5%88%B0%281%2F2%29%E2%88%AB%EF%BC%881%2F%7B1%2B%5Bcos%28x%2F2%29%5D%5E2%7D%EF%BC%89dx%E5%B0%B1%E4%B8%8D%E7%9F%A5%E9%81%93)
xSn@~fbnKex˖(REQ%K5 E6R5$ŀ%ޥs:D{̩R}ٝ|37kW4n/4>d}1%oo ;߉Q4~5e}_&6j/*zHn=⇚SK`J'=~:!H5ʯjaUt~8Iw8pĮGL̚4燗yޘ?eѝ!$
'?dwЪg{+g xN"HF-K۵Cc