Hey @gregmat I would like to know why the above function is NOT defined for domain x<= -2 (except -3). I think the answer will be D instead of A. To confirm this I also graphed the function in desmos as shown below.
What am I missing here?
It is defined for x values less than -2. As you can see, x values less than -2 do have corresponding y values
You picked option A in the video. Will it be D then?
No, because the function is equated to zero. The graph you highlighted is showing a range of x and y values (infinite in fact).
In this case, the only way to make the equation equal zero is for x to equal 0 or 2
Okay since we are looking for the solutions then we shouldn’t mention the term domain here since that is related to the whole function and not just 2 solutions.