( 753 ) 
Jl Plu) 1 " F(usn) act ] 
———— J*(us,, (ua) = “ cee det. De Er 
Sn 114? es read, Sn Pn—1 dPn—1 
0 
so that we get 
mg 13 = 
1 
a 
sin?’ pd sin” —~ dg... | sin?’ ~y—1 dg~y— 
[2 verend ’p, if p‚dp f Pnt dn X 
0 0 
etl 
for (uc) J(us‚‚) du, 
S’n 
0 
Ve a eae iat sy foe 9‚dg, fende x 
x 
+2 
TE ae (uc) Fue) —. 
Let now in the first place be 
e>a,+ta,+...-a, 
then c is certainly greater than s,, and we find 
a a n—l 
W=l ———._] sin” a da : 
2° /x Pv +4) 
0 
W.=:(¢ — a,’ 
2 
il 7 n—l 
th pias oe eek NS ae a?) Perses sin?’ a de | . 
0 
As 
a En Valt) 
bar eet 
F(v+1) 
0 
we find as final result 
ee a fhe Plus) a tia) 
saa!" (ue) BCA) IP (la) (a) EDTA) 
0 
c di du ce —a,?—-a,,7...-Ay? 
W.= J’+?2 J J” 8 eee jf 3 2 n ; 
: a tele, Pua). (uaa) et ae FL) 
0 
(c>a+ta+....+a,). 
Still in a second case the values of the integrals W, and W, are 
known. Let a, exceed all other numbers a and let us put 
a, >cta,+.... + an 
