已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,0<φ<π)的一个周期的图象,如图
(1)求y=f(x)的解析式;
(2)若函数y=g(x)与y=f(x)的图象关于直线x=2对称,求y=g(x)的解析式.
考点分析:
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)=
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,x∈(
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).
(1)求sinx的值;
(2)求sin(2x
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①y=tanx在定义域上单调递增;
②若锐角
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;
③f(x)是定义在[-1,1]上的偶函数,且在[-1,0]上是增函数,若
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,则f(sinθ)>f(cosθ);
④要得到函数
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的图象,只需将
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的图象向左平移
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个单位.
其中真命题的序号为
.
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已知函数f(x)满足:f(a+b)=f(a)•f(b),f(1)=2,则
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+
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+
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+
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=
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若向量
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为两两所成的角相等的三个单位向量,则
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=
.
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