

Ill 



6 *. ',+-,.: 



i vll \U x 



* * 



a *- 6 I L=J. ' * 



I 8 -7' Vw ^ 



10 Hin^ = Jl-li. 11. Xx-y 



ivn 



IS. ll/-7y-S. 



+ -*. ' 



^* 



-7 f , - 19 



; Sx-y 



It. ^-i -!L a 

 '* 



-. - - . 



^=,) b " fc - 



II. y 4- ft* -I- 4=0. z-4* = 

 ML Ibx-t lly- 17t = 10. 



Pag* 380 Example* on Chapter IV Part EL 



(z, - )(* - 

 at (XL y,, *i) 



- o)(y - 



- O 



(Ft - 



14. 



=li 



II. 



