variable \\
\\
f'\left(x\right) \\
\\
a123456789°à@çè|#~#& \\
\\
2_{2m} \\
\\
2é8fsdmoiuuç \\
\\
\Alpha \\
\alpha \\
\Digamma \\
\digamma \\
\Kappa \\
\kappa \\
\Omicron \\
\omicron \\
\Upsilon \\
\upsilon \\
\Beta \\
\beta \\
\Zeta \\
\zeta \\
\Lambda \\
\lambda \\
\Pi \\
\pi \\
\Phi \\
\phi \\
\Gamma \\
\gamma \\
\Eta \\
\eta \\
\Mu \\
\mu \\
\Rho \\
\rho \\
\Chi \\
\chi \\
\Delta \\
\delta \\
\Theta \\
\theta \\
\Nu \\
\nu \\
\Sigma \\
\sigma \\
\Psi \\
\psi \\
\Epsilon \\
\epsilon \\
\Iota \\
\iota \\
\Xi \\
\xi \\
\Tau \\
\tau \\
\Omega \\
\omega \\
\\
\infty \\
\infty