Show that the following function is continuous only at x=0 :

f(x) = x for x rational

-x for x irrational

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- Sep 15th 2011, 05:08 PMriddikulusContinuity..again.
Show that the following function is continuous only at x=0 :

f(x) = x for x rational

-x for x irrational - Sep 15th 2011, 08:09 PMTKHunnyRe: Continuity..again.
One may wish to start with the definition of continuity. Let's see what you have.