化简f(X)=(1-√2sin（2X－π／4）)／cosX
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化简f(X)=(1-√2sin（2X－π／4）)／cosX化简f(X)=(1-√2sin（2X－π／4）)／cosX化简f(X)=(1-√2sin（2X－π／4）)／cosXf(X)=(1-√2sin
化简f(X)=(1-√2sin（2X－π／4）)／cosX
化简f(X)=(1-√2sin（2X－π／4）)／cosX
化简f(X)=(1-√2sin（2X－π／4）)／cosX
f(X)=(1-√2sin（2X－π／4）)／cosX
=[1-√2(sin2x*cosπ／4-cosx*sinπ／4)]/cosx
=(1-sin2x+cos2x)/cosx
=(1-sin2x+2(cosx)^2-1)/cosx
=(2(cosx)^2-2sinxcosx)/cosx
=2cosx(cosx-sinx)/cosx
=2(cosx-sinx)
或者再简化=2√2cos(x+π／4)
化简f(X)=(1-√2sin（2X－π／4）)／cosX
化简f(X)=(1-√2sin（2X－π／4）)／cosX
化简f(x)=(1-√2*cos(2x-π/4))/sin(π/2-x)
化简f(x)=(1+√2*cos(2x-π/4))/sin(π/2-x)
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已知函数 f(x)=sin^2(πx/4)-√3sin(πx/4)·cos(πx/4) (1)求f(x)最大值及此时x值 (2)求f(1)+f(2)+f(3)+已知函数 f(x)=sin^2(πx/4)-√3sin(πx/4)·cos(πx/4)(1)求f(x)最大值及此时x值(2)求f(1)+f(2)+f(3)+...+f(2010)值