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AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

Section: Mathematics
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Question : 72 of 160
 
Marks: +1, -0
If ∫ cos x . cos 2x . cos 5x dx = A sin 2x + B sin 4x + C sin 6x + D sin 8x + k
(where k is the arbitrary constant of integration), then
1
B
+
1
C
 =
Validate
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