MHB Is the Equation in a Circle Correct?

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the equation in circle is right ??
 
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Your image seems to be cropped on the right.

For something like this, it would be better to use $\LaTeX$. All of the symbols you need are in the "Set Theory/Logic" section of our "Quick $\LaTeX$" element:

[table="width: 200, class: grid"]
[tr]
[td]Command[/td]
[td]Output[/td]
[/tr]
[tr]
[td]\lor[/td]
[td]$$\lor$$[/td]
[/tr]
[tr]
[td]\And[/td]
[td]$$\And$$[/td]
[/tr]
[tr]
[td]\lnot[/td]
[td]$$\lnot$$[/td]
[/tr]
[tr]
[td]\iff[/td]
[td]$$\iff$$[/td]
[/tr]
[/table]
 
hossam killua said:
the equation in circle is right ??
Yes. Disjunction is idempotent: $x\lor x\iff x$.
 

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