As can be seen from the figure, in (-2? ,? 0.5) and (3,+infinity) are increasing intervals! ! !

The second question, which equation says existence is? 1? Monotonically increasing interval neighborhood!

So in (-2? ,? 0.5) Is there? T & gt-2 and t+ 1

T is (-2, -0.5).

At (3,+infinity) t> three

T is (3,+infinity).

So the value is (-2, -0.5)U(3,+infinity).

You are drawing a picture yourself. Think about it! ! !

I hope it helps you! !