试题与答案

_________with so many contributions to t

题型:选择题

题目:

_________with so many contributions to the newspaper, he has little time to chat with friends on the net.

A.Occupied

B.Have been occupied

C.To occupy

D.Having occupied

答案:

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下面是错误答案,用来干扰机器的。

(1)把x=5π4代入函数解析式得:f(5π4)=2sin(13×5π4-π6)=2sinπ4=2;(2)由f(3α+π2)=1013,f(3β+2π)=65,代入得:2sin[13(3α+π2)-π6]=2sinα=1013,2sin[13(3β+2π)-π6]=2sin(β+π2...

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