Full text: Kurzgefaßtes Lehrbuch der Mathematik für Ingenieure

147 
1/—2 U2 2 k 2 — U 2 b 2 —- U 2 
l a- — b 2 x- = a • vir— : dx = 2 aTr^ — d u. 
b 2 + u 2 ’ 
oder auch 
(b 2 + u 2 ) 
c) ]' a 2 — b 2 x 2 = (a — b x) . u, x = 
][ a 2 — b 2 x 2 = 2a — ^ U { i; dx = ^ 
au 2 — 1 
b u 2 -f- 1' 
u 
u 2 -f- 1 
d) j/ a 2 -[- b 2 x 2 = u — b x, x 
b (u 2 -f- l) 2 
1 u 2 — a 2 
2 d Uj 
'2 b 
1/—ö—i—Ü2—¥ 1 u 2 ~h a 2 1 u 2 -4- a 2 
[/ a 2 -(- b 2 x 2 = ! , dx= -—I—du. 
* ” 2 b u 2 
e ) 1/a 2 + b 2 x 2 = a ux, x = 2a • 
b- — u 2 
lA 2~~ | i 2 2 b 2 + U 2 , _ b 2 + U 2 , 
[/ a* -f- b 2 x- = a • -^r, dx = 2 a 7i -- t> ^ du. 
oder auch 
b 2 — u 2 ’ 
(b 2 - u 2 ) 2 
f) Fa + bx -f cx 2 = L • (u — C x), X = — • -°- 2 a c , 
]/ c c 2 u b 
Ka + bx + cx^ = i • u2 + b lt~’ dx = - • ^ b ltw- du - 
|/c 2u -j- b c (2 u -(- b) 2 
oder 
g) 1/a + bx -f c x 2 = ]/a (1 — u x) x = 2 a ^ + - 
au 2 — c 
fa'+bx + cx> = - fä • a^ + bu + c 
au 2 — c 
, au 2 -f bu-fc , 
d x = — 2a* —-—h 2—-du. 
(a u 2 — c) 2 
h) l/a -j- b x — c x 2 = |/a . (1 — u x), x = 
c —[— a u 2 
i/ i ir t c — bu— au 2 .. _ c — bu — au 2 
1/a + bx — ex 2 = fa.— — T _ 2 dx = 2a.~-, o n du. 
c -(- au 
(c -f- au 2 ) 2 
8. Integration einiger transzendenter Funktionen. 
Da die Integration transzendenter Funktionen in geschlossener 
Form nicht immer möglich ist, so wird im folgenden nur an einer 
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