( 198 ) 



Let n = 5, a l = I, a 2 = 30 and a ls = 2. The value of. v satisfying 



da\* 2 (Pa 



a , is found from : 



/da\ 



or 



or 



3 dx ' 



(«„-«i) + («, + a, - 2a 12 ) « = [/ 1 ^ " 



1 + 27x — [/Id = 3,6 



2,6 



x. = — . 

 27 



1 da 1 c?6 

 The value of x satisfying - — = — — , is found from the equation : 



CI tlW O CltC 



n — 1 n — 1 



B — A + Cx H Cx % 



2 ^ ^ 2 



or 



— 1 -f 27.* + 54 a>' = 

 or 



a, — 0,035. 



If we had put « 3 = 10, leaving the other values unchanged, so 



that - ]> w still remains larger than x, we find a?! from the 



equation : 



1 -f 7«, = |/3 and a?i == 0,1045 



and #, from the equation : 



— 1 + 7.^ -f- 14*/riö 

 or 



-• = -ï + |/+r, 



14 



4x i = — l-\-\y / — and a, = 0,116 



And finally, let us take a numerical example, more in agreement 

 with those which occur in the cases of minimum plaitpoint tempe- 

 rature studied experimentally. Let n = 1,5, a x = 1, a, = 1,45, so 

 that 7*., <[ 7*! . Let further a ls =l,l. Then #, is found from the 

 equation : 



0,1 -J- 0,25 « = |/0,12 = 0,3435 .... 

 *, == 0,974 

 and x t from the equation : 



