Sorry,this math problem is a bit difficult for me.I need to c____ it again.
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Sorry,this math problem is a bit difficult for me.I need to c____ it again.
答案
checkSorry,this math problem is a bit difficult for me.I need to _check_ it again.这道数学题有点难,我要再查一遍.changeSorry,this math problem is a bit difficult for me.I need to _change_ it again.这道...
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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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