Posted by cookie on Tuesday, November 27, 2012 at 10:25pm.
The distance from a point on the line from the origin is
((y-0)^2 + (x-0)^2)^0.5 =
(x^2+y^2)^.5 = (x^2 +(x+4)^0.5)
evaluate d/dx((x^2 +(x+4)^0.5)) = 0
This is the x value of the point closest to the origin, plug x into y = sqrt(x+4) to find the y value of this point
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