化简sin^4x-sin^2x+cos^2x
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化简sin^4x-sin^2x+cos^2x化简sin^4x-sin^2x+cos^2x化简sin^4x-sin^2x+cos^2xsin^4x-sin^2x+cos^2x=sin^2x(sin^2x
化简sin^4x-sin^2x+cos^2x
化简sin^4x-sin^2x+cos^2x
化简sin^4x-sin^2x+cos^2x
sin^4x-sin^2x+cos^2x
=sin^2x(sin^2x-1)+cos^2x
=-sin^2xcos^2x+cos^2x
=cos^2x(1-sin^2x)
=cos^4x
=sin^4x-2sin^2x+cos^2x+sin^2x
=sin^4x-2sin^2x+1
=(sin^2x-1)^2
=(1-sin^2x)^2
=con^4x看看理解有错不
化简sin^4x-sin^2x+cos^2x
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化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x
化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x
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化简【完整步骤!】1.（sin^4x-sin^2x）/secx2.sin^4x-cos^4x【这道题的正确答案是sin^2x-cos^2x】
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cos^4 x-sin^4 x+2 sin^2 x化简