Example: Examples of Real Functions, Whose Graphs Cannot be Plotted

(related to Chapter: Types of Real Functions)

Example 1 Rational Numbers Identity Function

$f:\mathbb R\to\mathbb \{0,1\}$ with

\[f(x):=\cases{ 1&if$x$is rational\\ 0&if$x$is irrational. }\]

Example 2 (...)

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References

Bibliography

  1. Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983