I need to fins domain an drange of
y={x^2, x

Question

I need to fins domain an drange of 
y={x^2, x<0 and 2-x, x greater than or = 0}

anonymous · Answer

just graph it. Are you in pre calc?

anonymous · Answer

y=x^2 
D: (-infinity,0)
R:(0, infinity)
y=2-x
D:[2,infinity)
R:(-infinity,2)

anonymous · Answer

I need to be able to do it by hand. And no, I am in calc, but its review. Can you tell me how you got these answers?

anonymous · Answer

When you are looking for the domain of something you are looking to see where x is 0 and since the first one there  is not it would be all real numbers, but we have a restriction and can only look at the part of the graph that is less than 0.  And the range you would just plug 0 in for x and solve.  As for the second one it is the same principal but different restriction. I hope that kinda clears it up for you