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[3(sin x-cos x)^(4)+6(sin x+cos x)^(2),]...

[3(sin x-cos x)^(4)+6(sin x+cos x)^(2),],[+4(sin^(6)x+cos^(6)x)=,[11T-1995]],[[" (A) "11," (B) "12," (C) "13," (D) "14]]

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