若f(x)=asin(x+π4)+3sin(x?π4)

发布时间:2021-02-25 17:48:25

若f(x)=asin(x+π4)+3sin(x?π4)

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f(x)=asin(x+π4)+3sin(x?π4)=a(22sinx+22cosx)+3(
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