limx→-2x+2x2-4=limx→-2x+2(x+2)(x-2)=limx→-21x-2=-14.
答案:-14.
_____does your watch cost? Two hundred yuan.
A.How many
B.What price
C.What
D.How expensive
在计算机内实现递归算法时所需的辅助数据结构是 ( )
A.栈 B.队列 C.树 D.图