lolimcool
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how do you guys type math and formulas and stuff on this forum?
Type Math & Formulas on Forum: Guide
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Hi lolimcool! 
See the thread https://www.physicsforums.com/showthread.php?t=386951
Basically, say you want to display [itex]\sqrt{2}[/itex]. Then you need to find the correct formula for sqrt, and that is \sqrt{...} and then you need to type it between [ itex ] ... [ /itex] tags (without spaces).
Thus, we should type [ itex ]\sqrt{2}[ /itex ].
Another example; [ itex ]\frac{1}{2}\in \mathbb{Q}[ /itex ] yields [itex]\frac{1}{2}\in \mathbb{Q}[/itex].
See the thread https://www.physicsforums.com/showthread.php?t=386951
Basically, say you want to display [itex]\sqrt{2}[/itex]. Then you need to find the correct formula for sqrt, and that is \sqrt{...} and then you need to type it between [ itex ] ... [ /itex] tags (without spaces).
Thus, we should type [ itex ]\sqrt{2}[ /itex ].
Another example; [ itex ]\frac{1}{2}\in \mathbb{Q}[ /itex ] yields [itex]\frac{1}{2}\in \mathbb{Q}[/itex].
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