已知,求f(x).
参考答案:
[解] 先求出f’(x).
作换元u=lnx,则有
Working abroad for years, she has made a big _____ and has started a company of her own. [ ]
A. money
B. fortune
C. wealth
D. treasure
As the years passed, many occasions—birthdays, awards, graduations—________ with Dad’s flowers.
A.are marked
B.were marked
C.have marked
D.had marked