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discontinuities

alla 615
August 08 2008
0

My calculus book says that y = (x^2 - 2)/(x - sqrt(2)) is discontinuous at 2, but Maple finds a limit of

 

          -( 2/(-2 + sqrt(2))

 

I get the same result manually, and a plot of the function shows a straight line with no discontinuities.

 

Is the book in error?

 

Alla

 

 
error plot calculus

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