Sandbox

Formel: $\Delta L_{sum}={\frac {\sqrt {L_{R}^{4}\cdot \Delta L_{B}^{2}+L_{B}^{4}\cdot \Delta L_{R}^{2}}}{(L_{B}+L_{R})^{2}}}$ --- $f(x)={\sqrt[{4}]{x}}$

$f(x)={\frac {y}{x}}$
hallo

$L_{iij}$

$X_{ij}=x_{i}x_{j}$

There was a young lady from Riga,

who smiled as she rode on a tiger.

they returned from the ride

with the lady inside

and the smile on the face of the tiger.

hello	is
a	table

         5

      /       \

    2           8

  /   \       /   \

1       4   7       9

This is a sentence.

This sentence is false. And this one is unprovable!