XV
- 7 |
f „V | |
y x |
f y i | |
1 — 1 | ||
y2 +x2 _ |
2 2 X X . |
.....w |
xy |
xy |
y |
X1 |
X |
— — u - |
.......> y — y • u |
z/ + jtw' | ||
X | ||||
U + XI/' |
u1 + 1 | |||
u | ||||
u -f xu |
1 ~ li ! > | |||
u |
u | |||
du dx |
■- —> udu = u |
dx ’ -^ |
1" udu = |
f efe ' X |
1 , —tł = 2 |
Inx + InC |
~*»2 ~ |
2 Jn.rC | |
u = 4l |
In xC | |||
y~x4 |
21nxC |
8