题型:问答题 简答题 已知定义在R上的函数f(x)=x2(ax-3),其中a为常数.(1)若x=l是函数f(x)的一个极值点,求a的值;(2)若函数g(x)=f(x)+f′(x),x∈[0,2],在x=0处取得最大值,求正数a的取值范围. 查看答案
题型:问答题 简答题 It was because of his absence _____ the meeting had to be put off. [ ]A. soB. so that C. whyD. that 查看答案