-- Whose guitar is it? -
A:My violin is at home.
B:I can swim.
C:It's Ann's guitar.
肚的笔画顺序是:____
设函数f(x)=ex﹣2ax,x∈R.
(1)当a=1时,求曲线f(x)在点(0,f(0))处的切线方程;
(2)在(1)的条件下,求证:f(x)>0;
(3)当a>12时,求函数f(x)在0,2a上的最小值和最大值.
冷战结束后,世界格局出现重大变化。下列各项,与当今世界格局不符的是( )