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Question

limx0(1cos2x)(3+cosx)xtan4x is equal to

A
2
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B
1/2
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C
4
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D
3
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Solution

The correct option is B 2
limx0(1cos2x)(3+cosx)xtan4x(11+2sin2x)(3+cosx)x×4x×(4xtan4x)2sin2x4x2×(3+cosx)×112(sinxx)2×(3+cosx)×112×4×1=2

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