AjSin I . I

-h AjSm I .'? —

Bjcosi.i — )e '"

^ 27r\ -l-/»[nVî~

B,cosi.2— le '" n

— - AiSin2.o hB,cos2.o — e '"

/ 27: 27:\ -j-z^mvi —

-{-( A,sin2. 1 - 4- BjC0S2. 1 ^ le "* "

l-( A3sin2.2^^-^

-h B3COS2.2 " — ) e

2 7:\ -ï- MlnVl —

(Xn =^ Aisin(/i — -\- AjSin(/i — H- A3sin(/i —

1)0-- -h B,cos(/i n

i) I — - -h BjCcsC/i

1)2 h BjC0s(/i

2Tt'|

- J — / slii \ 1 —