# Math Help - regluated and continous function example

1. ## regluated and continous function example

could someone give me the example that the function is:

A) regulated and discontinuous

B)not regulated and discontinous

2. ## Re: regluated and continous function example

Originally Posted by cummings123321
A) regulated and discontinuous

B)not regulated and discontinous
I had to look up that term. I have always called such functions quasi-continuous.

For A, use any step function. For example the floor function on $[0,10]$.

For B, use any discontinous function which is not of bounded variation.

Here is a function which is continuous but not q-continuous.
$\left\{ {\begin{array}{rr} {x^2 \sin \left( {\frac{1}{{x^2 }}} \right),} & {x \ne 0} \\ {0,} & {x = 0} \\ \end{array} } \right.$