Question: Show that is a discontinuous function for all x, where (x) is defined as follows: Show that 2 is continuous for all x.

Show that ƒ is a discontinuous function for all x, where ƒ(x) is defined as follows:

f(x) = 1 -1 for x rational for x irrational

Show that ƒ2 is continuous for all x.

f(x) = 1 -1 for x rational for x irrational

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