48 SYLVAIN J. PIRSON 
2. THREE STRATA OF SAME ANISOTROPY 
The theory previously given for a two-layer case can be easily 
extended to the three-layer case when the individual layers present 
the same anisotropy. It can be easily proved that the expression of 
the apparent resistivity in such a case is given by: 
ee : 
pt» n=0 h 
4/3 + | 20+ 1) 
an/a 
; 



i Was a ay} 
+4 - KK (nm + 1)K" 
n=0 
I 
as ee eres 
I 
ir gra pase 
= [~ ne NG se EO) 




+ 4(: — K)KY 
n=0 
—(n+ DR] Ke 
2 

7 hy hinsle 
ae Go| 
Bian emma | 
H/ 4 4 a 2(n =| 
ta - DKS Ibs on (: — K?) 
n=0 m=0 

— n(n + 1)(1 — K*)K?+ (n+ DK| Lo 
708 
