How do you find the intervals on which the graph of #f(x)=5sqrtx-1# is concave up or is concave down, and find the x - coordinates o the points of inflection?
1 Answer
May 26, 2015
Unless required, I would not use calculus for this.
The graph of the square root function is:
graph{y=sqrtx [-1.34, 11.146, -1.744, 4.5]}
In
It is clear that the graph is concave down on
Since the concavity does not change, there are no inflection points.
If I am required to use calculus:
Note that the domain of
Therefore, the graph of