Write the Fourier series representation of the periodic function f (t) if in one period: f(t)...

 

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Write the Fourier series representation of the periodic function f (t) if in one period: f(t) =t, -n<t<n. Select one: O a. ftt) = 2 cost - cos 2t + 2 /3 cos 3t - O b. f(t) = 2 sec t-sec 2t + 2/3 sec 3t- Oc fit) = 2 sin t-sin 2t + 2/3 sin 3t --- O d. fit) = 2 tan t- tan 2t + 2 /3 tan 3t -- Write the Fourier series representation of the periodic function f (t) if in one period: f(t) =t, -n<t<n. Select one: O a. ftt) = 2 cost - cos 2t + 2 /3 cos 3t - O b. f(t) = 2 sec t-sec 2t + 2/3 sec 3t- Oc fit) = 2 sin t-sin 2t + 2/3 sin 3t --- O d. fit) = 2 tan t- tan 2t + 2 /3 tan 3t --