- #1
ziaharipur
- 6
- 0
I am trying to find the domain of this function f(x)=sqrt(x^2 - 2x +5). i am supposing that y=x^2 - 2x +5 and y must be greater of equal to 0. in otherwords where the graph is touching or above x axis. to find where the graph is touching x-axis i am trying to find the x intercept and i get complex x intercept, does this mean that graph is not touching x axis? now if this happens how can we find out that the graph is above x-axis or below x-axis please explain...