IMG_4971.jpg

We have these two graphs, and these two functions:

A) (F+G)(x)

and

B) (F/G)(x).

And the question is asking what the domains of these two functions are. I am having a lot of trouble understanding how to get to the proper answers. If anybody could explain this question I would be very grateful.

Answers:

A) (-∞, -1]u(1,2]u(3,∞)

and

B) (-∞,-4)u(-4,-1]u(1,2]u(3,∞)

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