SOLUTION: Principal period of function f(x) = cos(3x+4x) ??

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Question 1127502: Principal period of function f(x) = cos(3x+4x) ??
Answer by ikleyn(52824) About Me  (Show Source):
You can put this solution on YOUR website!
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The given function in an equivalent simplified form is 


    f(x) = cos(7x).


Its principal period is  2pi%2F7.

Answered, solved and completed.