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What does this mean when talking about suitable...
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You are currently reading a thread in /sci/ - Science & Math

What does this mean when talking about suitable domains?
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>>7763411
It means x is real.
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>>7763411
x = variable x
∈ = 'is an element of'
R = real number set
Hence, x∈R is simply a small note stating that x is a real number.
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>>7763412
So how big do I need to make this graph?
>>
>>7763417
not that big, just - to + infinity
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>>7763411
It means x is not fake
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>>7763571
u mean 'irrational'
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>>7763771
Irrational numbers are still real. They're literally between reals
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>>7763411
X is an element of the real numbers

Here, have a video:
https://youtu.be/dLn5H69lS0w?t=34
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It means your 'x's cameltoe is real.
>>
can't you read the picture? it says

boobs, vagina, penor in hole
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>>7763775
You mean rationals?
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>>7763818
>>7763818
Yes. I am an idiot and English is not my first language
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>>7763818
>>7763827
they are between reals as well ;^)
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>>7763831
>>7763818
>>7763771
Stop being so irrational
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It means x is not imaginary, in which case you'd need another dimension to your graph.
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>>7763422
>>7763417
Just scale your axis by the tan(x) and you only have to draw from -pi/2 to +pi/2