How do you find the vertex of f(x)=x2+3?
1 Answer
Apr 25, 2016
Explanation:
The equation of a parabola (with vertical axis) in vertex form can be written:
f(x)=a(x−h)2+k
where
In our case we find:
f(x)=1(x−0)2+3
which means that
So the vertex is
Alternatively, note that
Substituting
Hence the vertex is at