Question #02643
1 Answer
Dec 14, 2017
Explanation:
Remember, the range of the function is the output of the function (i.e. The possible values for
So basically, you want to find the vertex of the function as that is the maximum/minimum value of a quadratic function.
To find the vertex, you can complete the square. Here is my working for completing the square:
Therefore, using the vertex form (
Using the
Thus, the range is
Hope that makes sense!