VI

. [(a) Hp. PI . §9P44 : : (A -h B)/B = (a?A H- a>B)/(û>B) {B) » PI : : (A -f- B)/B == (a?(A-hB))/(wB) . » (a) . (3) ..§9P2 . Tq : o : (a?( A-h-B))/i a?B)=(^A-+-a?B)/(«B). §9P9 : : Ts] 12.. oys (pcLW) . A, B, A— Bf V .0. a;(A— B)=a?A— o^B [1.3.4.6.6. 7. 8 J

13. a; £ (p. VV) . = : 0? £ (pd. VV) . v^ . 0? £ (pi. W) (Def )

14. n £ 2 -+^ N . f f (KG)IZ^ .Aefiira Z^-i . Or . ojr f (p./VA^H- 1)) : o .-.

a?n-l û?n-2 ... ûJgW^A = a?;»i (a?n-2 ... «gû^iA) (Def)

15. 71 £ 2-hN . f€ (KG)/Z;»i . r a 7a,v-\ . Or . û?r e (p . frf{r^l)) : o .'. a?n-i

a?„-2 ... ci^gco^ f {fn\fVj sim

16. '«/f (i)d : VX) • ®2 ^ (pd . V2V3) . . a;,û;^ £ (pd . V.Vg) [1.3:4.5.6.8]

[(a) Hp. P15 : : cogO?, £ {Yj^^) sim

(;8) » A, B £ Vi . PI . §9P2 . Tq:o:A/B=(a?,A)/(a3,B)=(o^2(cu,A))/ - . (a5,(aj,B)).P14:o:A/B = (a?2aj,A)/(a?2a?,B)

» (a).(/8).Pl:o:Ts]

17. a>, £ (pd . V.Vg) . o;, £ (pi . V2V3) . o . 0,^0,, B (pi . V,V3) [1.3.4.5.6.8 J