化简cos^4x-2sinxcosx-sin^4x
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化简cos^4x-2sinxcosx-sin^4x化简cos^4x-2sinxcosx-sin^4x化简cos^4x-2sinxcosx-sin^4x(cosx)^4-2sinxcosx-(sinx)
化简cos^4x-2sinxcosx-sin^4x
化简cos^4x-2sinxcosx-sin^4x
化简cos^4x-2sinxcosx-sin^4x
(cosx)^4-2sinxcosx-(sinx)^4
=(cosx)^4-(sinx)^4-2sinxcosx
=[(cosx)^2-(sinx)^2][(cosx)^2+(sinx)^2]-2sinxcosx
=[(cosx)^2-(sinx)^2]-2sinxcosx
=cos2x-sin2x
化简cos^4x-2sinxcosx-sin^4x
化简2*(sinxcosx-cos平方x)+1
化简 根号3sinXcosX+cos*2X
y=sinxcosx+cos(2x)化简
化简:(cos*2x-0.5)/(sinxcosx)
化简sinx-sinxcosx+cosx 表示4次方
sin²X-sinxcosx+2cos²x=化简
化简f(x)=cos^2(x+π/12)+sinxcosx
2sin平方x +cos平方x+3sinxcosx化简
f(x)=sin^4x+2√3sinxcosx-cos^4x化简
已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简
y=2sin^2 x+4sinxcosx+5cos^2 x 化简
化简：y=cos^4 x＋2 sinxcosx－sin^4 x
y=sin^4x+2√3 sinxcosx-cos^4x 化简
化简y=2sinxcosx+2cos^2x-1
2sinxcosx-cos(2x-π/6)化简
化简1+2sinxcosx+2cos²x
sin^2xtanx+cos^2x/tanx+2sinxcosx-(1+cosx/sinxcosx)化简