

i.v: 



tliis liiii-. tli 



+ y') + C-0. . . . (8) 



(8) M* 



P 1 h M r|ii,r 



f<7-0: [38] 



lit / y always lies on the IOCUM of equa- 

 \vordx, [88] in the IMJIMI 



\ \\ nil regard to !. 



M on [38] is of the first degree in 



variables x an i _//. tin n- fore (Art. 57) iu locus is a 

 line; tli.it IN, th.- /' point^ unth regard to any 



ffimi t a straight line. 



'I'll. it -.jn.it ioDfl [ ' J ami [o7 ] h.i\c the same form asequa- 

 [38] in clue t.. tli- f.i.-t tint tin? tangent anil the chord 

 11 tact an >ecial cases of the p< 



93. Fundamental theorem, 

 earning poles ami | 



'o a given circle, 

 pa**?* throwjh the point P T 

 the polar of P s patsei 

 ih l\. L. t the equa- 

 tion of the given circle be 



+ (7=0, . . . < l 

 ; wo given pi 



IK- /' 



An Important theorem 

 he polar of the point P 



r 



.- Mju.iti..n <,f tin- 



s 



