have trouble with sth
题目
have trouble with sth
答案
have trouble with 有病痛, 因…苦恼 She is having trouble with her teeth. 她牙齿痛. 同…闹纠纷 We had trouble with our neighbors over the noise that they were making. 我们因邻居制造的噪音而与他...
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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