Here is some regularly sized text for comparison. E=mc2{\displaystyle E=mc^{2}}
x = − b ± b 2 − 4 a c 2 a / h {\displaystyle x={\frac {-b\pm {\sqrt {b^{2}-4ac\ }}}{2a}}/h}
Φ ( x ) = 1 2 π ∫ − ∞ x e − t 2 / 2 d t {\displaystyle \Phi (x)={\frac {1}{\sqrt {2\pi }}}\int _{-\infty }^{x}e^{-t^{2}/2}\,\mathrm {d} t}
