Problems with latex

[chimay]

I have problems to write the formulas correctly . How can I include them in only one line instead of obtain this effect(i.e):
-I want to to include the formula f=ma in this line!

[micromass]

Use


f=ma


instead of tex.

Also see our LaTeX-guide: http://www.physicsforums.com/showthread.php?t=546968

[chimay]

Thanks!