ProofWiki:Jokes/Adult/Sex is Fun

Joke

Let $e^{x / n} = \dfrac \d {\d x} \map f u$.

Then:

$\ds \sqrt [n] {e^x}$

$=$

$\ds \dfrac \d {\d x} \map f u$

$\ds \leadsto \ \ $

$\ds \paren {\sqrt [n] {e^x} }^n$

$=$

$\ds \paren {\dfrac \d {\d x} \map f u}^n$

$\ds \leadsto \ \ $

$\ds e^x$

$=$

$\ds \paren {\dfrac \d {\d x} \map f u}^n$

$\ds \leadsto \ \ $

$\ds \int e^x$

$=$

$\ds \int \paren {\dfrac \d {\d x} \map f u}^n$

$\ds \leadsto \ \ $

$\ds \int e^x$

$=$

$\ds \map f u^n$

Purists are entitled of course to quibble that the left hand side should really read $\ds \int e^x \rd x$.