A:削减行政开支,减少财政支出
B:增加国家税收,扩建公用设施
C:减少国家税收,减持外国国债
D:增加财政支出,刺激需求增长
—No,but I ________ it everywhere.
I was really scared and I didn't know ___________ when I saw a snake that day.
已知fx=3cosx+3π2+cosx-3π2+sinx+π+a(a∈R,a为常数).
(1)若f(x)为奇函数,求a的值;
(2)若x∈R,求f(x)的最小正周期;
(3)若x∈0,π2时,f(x)的最大值为4,求a的值.