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If anyone could explain how the following is done, it would be greatly appreciated!
Use the lines through the point (1,1) to describe all the points on the circle x^2 + y^2 = 2, whose coordinates are rational numbers.
As far as I know, the only points that fit that description are:
(1,1); (1,-1); (-1,1); (-1,-1).
I think the question now wants lines that go through (1,1) and each of those other points.
The lines x=1, y=1 and y=x would do that.
Why did the vector cross the road?
It wanted to be normal.
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