348 Practical Comparison of 



15. In the quadratic hypothesis, the two values of the fluent are 



-^ — -1 — , and — — , the difference being ~" ^ ^"^^ 



k Seek k Seek Seek 



= e : hut A; = 1 — iJ., cck:::^ec — ^7, and cekq =: ceq — q^; whence 

 ce 



__ 2c^-'2c^q — c^kq __ 2ec . _ \ _ q _ 2cc c — q _ 7 __ 



Seek Seek 3 3 ee^qq "s" 



2ec _q _ c-q 2e + q ^^^^^ ^^^^^^ ^^^^ ^ ^^__^^ ^^ 



3(c + g) 3 3 c + q 3 



1(0-,). 



E. Expeelations, compared with e = 43.5 — — q 



2(?c o 



F. Expeetatiom, compared with e r= — X. . 



Age q. e, c =: 87, Deparcieux. e\c = 90. * Carh'sle. 



