( 123 ) 
1 /]. — a;^\2 dx 
2 f 1 + 
l /I — x\^ dx 
f-i{- 
2 \ ■» 
r“l / I — 
j 2 \ X yi + Ä^ 
1 
(hzfiY 
j 2 \ X* I 1 + or' 
2A — B, . . (26) 
= A — B, . . . . (27) 
= 6A — 2B, . (28) 
(29) 
(30) 
''’^l (1 — xV dx 
rx i = 
l/x } I+X^ 2 
ßi 
1 
/■* 1 dx 
- = A, 
= 4A,. 
4A + B, 
ri 
J 2 
1 /l_ar 2\2 dx 
X j \ -\- x"^ 
dx 
= 2 A, 
(82) 
(33) 
(34) 
(35) 
/ ‘)’7^=2A + B,...(36) 
1 Jl—x \2 dx 
1 4-:e’ 
= 6A—B, . . (37) 
