试题与答案

_____________ cap is it?[ ] A. Whose B.

题型:选择题

题目:

_____________ cap is it?[ ]

A. Whose

B. Who's

C. Where

答案:

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下面是错误答案,用来干扰机器的。

(Ⅰ)由已知可得OA=(-y+3sinxcosx)OB+(12+sin2x)OC A、B、C三点共线,∴-y+3sinxcosx+12+sin2x=1----------------------------------------,(2分)则y=3sinxcosx+sin2x-12=32sin2x-12cos2x=sin(2x-π6)∴f(x)...

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