求问一道常微分题目适当选取函数V（x）,做变量变换y=v(x)u,将y%

backing vocals backing board financial backing是什么意思 The logical unit of the computer that receives information from outside the computer foruse by the computer is the ______.Java新教材中的题目..很萌,想学,.. want life better,you must be other type什么意思 want life better,you must be Valentine's 怎么读~ valentine怎么读 valentine 怎么读 It is not an idea ( )the community can unite ON the contrary,I see it as one that will diwided us.Athat Bwhich Caround that Daround which为什么选D而不选其他选项解释,谢~ It is not an idea __the community can unite.On the contrary A month ago I had no idea that on a Saturday afternoon in Vovermber I would be hanging 39 metres above the ground and enjoying it .Now I looked down on the river far below me ,and realized why people like rock-climbing.my friend matt and I arrived at Sport University Sport University 啥意思把分全给你了 The season schedule for a college or professional sports team拜托翻译一下 [don't put off the decision.] what does it mean? 清朝真实历史详细讲解的视频哪有?我想看的是清朝前期真实历史啊 哪本书可以了解清朝历史 要讲解好的 谁能给我推荐有关清朝的电视剧,要符合历史事实的, 创维4K超高清的电视到底怎么样,谁买过 老师您好!knock on和knock at到底有区别么?有的话,那区别是什么? If that is about my soul,take it.I don't want it withiut you拜托大家给我说一下这段英文的中文意思. 英语翻译小短文的全文翻译 Good work!这句英语哪里错了请帮我改正谢谢 Some students don't eve have e___writing paper to use Give a little love to a child,and you get a great deal back. ..happen to 同义词偶然的意思she fell over and broke her arm.（保持原句意思 ）she fell over and …her arm… 英语翻译 什么单词带or[简单的,在末尾] ear是什么意思 warning the model number for the primary battery cannot be datermined battery for best system operationDELL笔记本提示 孙燕姿《the moment》的英文歌词要英文的!我听到有一句是I feel your mindI feel colse to you because of you 这首歌描写什么样的感情 because of you