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数学
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若函数f(x)=(根号3)cos(3x+a)-sin(3x+a)是奇函数,则tana等于
人气:183 ℃ 时间:2019-10-26 23:16:53
解答
奇函数则f(0)=0
所以√3cosa-sina=0
sina=√3cosa
tana=sina/cosa=√3
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