题目内容
(请给出正确答案)
[主观题]
设x→0时,1-cos2x与为等价无穷小,则a等于(). (A)1 (B)2 (C)3 (D)4
设x→0时,1-cos2x与asin2(x/2)为等价无穷小,则a等于( ).
(A)1 (B)2 (C)3 (D)4
答案
查看答案
设x→0时,1-cos2x与asin2(x/2)为等价无穷小,则a等于( ).
(A)1 (B)2 (C)3 (D)4