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if period of function cos(nx).sin(5x/n) is 3 pi, then number of integral values of n are ?

if period of function
cos(nx).sin(5x/n) is 3 pi, then number of integral values of n are ?

Grade:12th pass

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
7 years ago
cos(n(x+3pi)(sin(5/n(x+3pi)= cos(nx).sin(5x/n)
=> if n is odd both will be equal if 15pi/n is integer => 1,3,5,15

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