(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Let f be the function defined on the real line by

[tex]

f(x)=

\begin{cases} \frac{x}{3} & \text{if $x$ is rational }

\\

\frac{x}{4} &\text{if $x$ is irrational.}

\end{cases}

[/tex]

Let D be the set of points of discontinuities of f. What is D?

2. Relevant equations

None

3. The attempt at a solution

How do you answer this?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Rational and Irrational numbers

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