设函数f(x)=sin(2x+ φ)(-π

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设函数f(x)=sin(2x+ φ)(-π

设函数f(x)=sin(2x+ φ)(-π
设函数f(x)=sin(2x+ φ)(-π

设函数f(x)=sin(2x+ φ)(-π
sinx对称轴为x=π/2+kπ;
所以2×π/8+Φ=π/2+kπ;
Φ=π/4+kπ;
∵﹣π＜Φ＜0；
∴Φ=-3π/4；
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