Find the smallest positive period of the function f (x) = cos ^ 23x-sin ^ 23x.

Given a function:

y = cos ^ 23 x – sin ^ 23 x.

First, we transform the function formula using the definitions of the cosine of a double angle:

cos ^ 23 x – sin ^ 23 x = cos 46x.

y = cos 46x.

The period of the cosine function of the argument is 2 * P, which means that the smallest positive period of our function is:

T = 2 * P / 46 = P / 23.



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