Alice needed some money for a Mother’s Day present.She told her father about her _21_ “If you
题目
Alice needed some money for a Mother’s Day present.She told her father about her _21_ “If you
would like to do some housework, I’ll _22 you. You can clean up the yard,” her father said. “You can also wash my car and Mum’s. _23 of them are really dirty.” Alice agreed and _24 on the yard until her father’s car was clean. “It’s too _25 that you don’t have time to wash Mum’s
car today,” Dad said when he paid her.
The next morning Alice _26 early.First she washed her mother’s car until it was clean._27_ she went to the flower shop and came home in time to have breakfast.After the _28 Alice asked her mother to go to the garage(车库).
“Wow,” Alice’s mother said.“_29 car is gleaming(闪闪发光的).”
“Open
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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