all polynomials have domain of all reals.
for the range, the vertex format is useful.
y = (x-1)^2 + 1
Since (x-1) is never less than zero,
y>=1
That's where the vertex is, at y=1.
So, (A) is the choice
Given no other restrictions, what are the domain and range of the following function?
f(x)=x^2-2x+2
A. D= all real numbers
R={y|y>=1}
B. R=all real numbers
D={x|x>=1}
I think it is A...?
2 answers
thank u very much