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Showing a Limit Does Not Exist

Multivariable Calculus: Show that the limit(0,0) xy/(x^2 + y^2) does not exist by finding two curves in the xy-plane along which the limit does not agree. We use the curves y=x and y=2x. Failure of the limit is also explained using polar coordinates. For more videos like this one, please visit the Multivariable Calculus playlist at my channel.
Length: 03:54

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