6. The easiest way to calculate the total resistance in a series/parallel circuit is to:

A) first, simplify into a parallel circuit

B) first, simplify into a series circuit

C) add all the values together

D) either A or B may be first

Fourier Series

I am trying to self teach myself Fourier series. I am stuck on how to solve a piecewise function Fourier series. f(x) = 1 when x is between 0 and pi, f(x) = 2 when x is between pi and 2pi. 

Thanks in advance. 

Can you help me with this problem? Thank you in advance 

9. The premium on an insurance policy is $500 per quarter payable at the start of each quarter. If the policy holder wishes to pay two year's premiums in advance, how much (rounded up to the nearest dollar) should be paid provided that interest is 6% compounding quarterly ? (a) $3,743 (b) $3,800 (c) $3,300 (d) $3,662