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[" The number of "x in[0,2 pi]" for whic...

[" The number of "x in[0,2 pi]" for which "],[|sqrt(2sin^(4)x+18cos^(2)x)-sqrt(2cos^(4)x+18sin^(2)x)|=1" is "],[[" (a) "2," (b) "6," (c) "4," (d) "8]]

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