C.Power and energy outside the sphere When0=π/2 P1(0)=0 for n even,and Pm2(0)=（-1)m-1w2 for n odd. 2-(2)》 [∑'A(-1)m+2Pn1(0)]2 (m+1) ∑'An2 2n+1 where >represents the sum over odd n onlyWhen / 2    C. Power and energy outside the sphere