[harding] rational PLANE ANHARMONIC CUBICS 195 



(22") A%=-20)8^ 



(23") A8^8 = 2^-3^-52-7/3^ 



0. 



Cusp parameter is ^= œ, Flex parameter is /= — — . 



(29") x; = ai, 



(30") Xi = 2a%-9a^Ci-\-9n- 



(32") 60\acx\t^-{-S(^\adx\-\-a\acx\)f-\-2a\adx\t-{-S^\cdx\=O. 



(33") r= -^^. 



2^ 

 (34") ^^_a+2^/ 



(35") ^_8^^f3a 



(38") As=3ac-/3rf+(6a6+6/3c)/+8aa/2+8/3a/^ 



Ap = 6a6 - 6|8c+ 8aa/+ 12^at\ 

 A' 



(39") 



XC4 = 4/3rf-3ac-3(2a6-/3c)/-5aa^2_5^^/3^ 

 60/3^ ^ 



^^ XC8= 12a-6-30a/3c+lli82<f-|-(16a2a-o7i3V)/ 



AV4'^=-600^\ 



(43") AVf^= 480/3\ 



AVf ' = 120^^. 



A80^^^ = 29-3600/38, 

 (44") aW8^= 11-3600/3«, 



(48") xP^ = 2a26i - 9a^Ci+ 9/32^i, 



3cP=a6i-3i8Ci. 



