4 
(Sc dX = R . X . dx, ^öov R er^tt guiiction of x, faa Wmv 
= — RX-^ -r- 2MRX-^ — 3NRX-5 
®ci'(if faoff man 
0 = I _ 1 _ MX-^» — NX-^ — PX-5 . 
HL- RX-* 4 2RMX-^ * sNR.'x-s * ■ 
d_M _ dN 
GX ÖX 
N 2MR — dM : ^ 
P — 3NR — dN : dx 
^ 3 bct foretagte SutcgtaC er dX =^ d . (i * ßog. x) x'^ — ((i ^ Co^/x)^ 
') x'^dx'iir (1 + eo^ x) Xdx^i* X (i * 80g. x)-^ . x^"* ♦ dx% mu 
faa R = I 4- Cog. x4- ^ ^y^ 6fri\)cc man v fop 1 * ßog» x^ faa 
et M = R = V * ,ir= C^v ) : dx = - — — . 
3 
X^5 ♦ 
03 altfa« Se" dx =1= e" . V. 
