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Question 342312: My math work book says "Write the range and domain of P = {(x,y) / y + x squared}. The range is the domain equals all real numbers and the range equals y :y>0}. I understand the real numbers but can you explain the answer for range? Any assistance would be appreciated! Thank you.
Greg
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! My math work book says "Write the range and domain of P = {(x,y) / y = x^2} }. The domain equals all real numbers and the range equals y :y>0}.
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I understand the real numbers but can you explain the answer for range?
Any assistance would be appreciated! Thank you.
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Yes, the domain is All Real Numbers.
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When you equare each of these numbers you always get a positive
number except for the square of zero which is zero.
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So the Range is "All Real Numbers greater than or equal to zero".
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Cheers,
Stan H.
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