there were six people at the table ,and they asked waiter for __and__
题目
there were six people at the table ,and they asked waiter for __and__
a two cups of tea;four coffee b two teas;four coffee
c two teas;four coffees d two cup of tea;four cup of coffee
哪个选择是对的?
答案
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．
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