What is the period of #f(t)=sin( 7t )+ cos( 8t ) #?
Period of function is
To find period (or frequency, which is nothing but inverse of period) of the function, we first need to find whether the function is periodic. For this, the ratio of the two related frequencies should be a rational number, and as it is
The period of
Hence, period of function is
(for this we have to take LCM of two fractions