6a , 

 y.(x,c) = - 7—; — - 2/e,t lerfc 



6 + 1 w l 



2/e.t 



+ tan a ol 1 \ (m) n 2/ V ierfc " 

 n=0 (^ 



(2n + 1)L + x 



2/et 



mr 



2/e.t ierfc 



(2n + 1)L - x 



2/e.t 



ril i (frr) 2/ V ierfc 



n=0 



2(n + 1)L + x 



2/£ l t 



- 1\ 



\S + 1 



n+1 



2/e t ierfc 



2(n + 1)L - x 



2/e.t 



(81) 



for t > and -L < x < . 



y 2 (x,t) = " 6~TT ?Vi T E ierfc ' 



2/e x t 



n=0 I 

 6 tan a , r- , . ,. n 



+ 2 -WT 21 I (frr) ^ i«f< 



n=0 (^ 



6x + 2(n + 1)L 



2/e lt 



6x + (2n + 1)L 

 2/e7 



(82) 



for t > and x > 



58 



