INVOLUTION. 



309 



, — 3,^/ root 



J^ ga/ ^ square 



., — 2'](i^ = cube 



w^ Sia-* =: 4th power 



*— *243«^ = 5th pOM'er. 



-^2fl.v ^ root 

 -j- 4^*;^'' = square 

 — ^(i^x^ = cube 

 »\*i6a^x^ = 4th power 

 -^32£2^.\'^° =; 5th power. 



a:+<^::i: root 

 x-r-n 



X^-^lax-^-a' — 5qua"M 



' ■ 



• IL I 1 ■ ■ 11 ■ 



X + a 



(if'^-J-4^;<f^-4"^^*^'*+4^^''^''+'^* =^ ""^^^ power. 



The third power of K^ is a:"'^ or ^^, 



The fourth power of 20^^!?* is 2'^X^^ ''^^ o^ 10^* *^*- 



The ;«th power of a"h is ^'""r. 



The second power of ax\^ is ^.vp 5 or ^vp, that is. 



(7^. 



The «th power of ax'' is as" > or ax. 



And 



