[SOLVED] How to center an equation ?

[ZaidAlyafey]

I used the double dollar sign to center an equation , but now that you changed its functionality , is their an alternative ?

 

[Ackbach]

$\displaystyle \int_{- \infty}^{ \infty}e^{-x^{2}} \, dx = \sqrt{ \pi}$
​

Use single-dollar signs with the displaystyle command to get the nice big operators, and then use the forum's new center justification button.

 

[ZaidAlyafey]

Ok , I think I made a mistake , I was doing something stupid