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If xylt0, which of the following must be...

If `xylt0`, which of the following must be true?
I.`x+y=0`
II. `2x-2ylt0`
III. `x^(2)+y^(2)gt0`

A

I only

B

III only

C

I and III

D

II and III

Text Solution

Verified by Experts

The correct Answer is:
B
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