性福的马甲1 2022-08-04 22:31 x属于(0,π)X=3π/4,时sin(x-π/4)=sin(3π/4-π/4)=sin π/2=1X=0时,sin(-π/4)=-√(取得最小值)所以f(x)=2-sin(x-π/开发者_运维百科4)最大值2+√最小值2-1=1
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