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integral values
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2k+1 is nothing but way of expressing odd numbers -1<= sinx <= 1 -5 <= 5sin x <=5 -5 <=2k +1 - 7x <=5 7x -6<= 2k-------------(1) 2k<=4+7x ---------------(2) -6<= 2k-7x <=4 since nothing is said about k i cannot proceed further | |||||||||||||
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