Consider the following equation,a^m/a^n = a^(m-n)
we say a^0 = 1
, 'casuse a^0 = a/a |a|>0
would take form of 0/0
, which is not defined.
Also, please note that infinity and not defined (nd) are to different terms.
1/0 = infinity
(infinity x 0), (0/0) etc. are not defined.
Anyways, no one has to worry about n.d. forms as they are out of scope for GMAT.
My posts: Solving Inequalities, Solving Simultaneous equations, Divisibility Rules
My story: 640 What a blunder!
Please support my campaign: