A. f(x) = + x
B. f(x) = x(1/3)
C. f(x) = -x
D. y = x(1/2)
E. y = ln(x)
F. y = | x | + 2
I picked B, D, and E but I was wrong. Why?
2007-01-16 06:12:10 · 3 answers · asked by Anonymous in Education & Reference ➔ Homework Help
a one to one function is one where if you graph the function and then draw a horizontal line the function and the horizontal line will intersect at only 1 spot
so then a, c, and e are ont to one functions I am not sure about B and D because I think that you may have meant f(x)=x to the power of 1/3 and f(x)=root x if that is the case then then B is not a one to one and D is
2007-01-16 06:26:26 · answer #1 · answered by Glenn T 3 · 0⤊ 0⤋
One to one means each "y" is paired with only one "x". This is true for everything but F.
2007-01-16 14:23:07 · answer #2 · answered by dmb 5 · 0⤊ 0⤋
why didn't you pick A? for each x there is one and only one f(x) and vice-versa
2007-01-16 14:20:39 · answer #3 · answered by gggjoob 5 · 0⤊ 0⤋