Hello. this is Fourier Series from Calculus 3 University level.

I need some help answering these hw questions. I don't understand how to complete them.

Please include all your work, including the steps for the integral parts.

Thank you.

Question 1 Find the Fourier Series of f ( 2 ) = - 3 + 3x2 on [1, 1] Please include all steps and all your work . Question 2 Find the fourier cosine series of f (21) = 22 on [0, 71] Please include all steps and all your work