How many continuous realvalued dunctions f are there with domain [1,1] such that (f(x))^2 = x^2 for each x in [1,1] ?
A) 1
B) 2
C) 3
4) 4
E) inf.
I thought of f = x, x, x
any other ?
could it be x ?
GR9768 Q 50

 Posts: 27
 Joined: Tue Apr 06, 2010 8:22 am
Re: GR9768 Q 50
almost  just wth minus outside of the abs f =  x. that will do.