- #1
lLovePhysics
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Do radicals always have a +/- sign in front of them?
For example the equation: [tex]y=\sqrt{x}[/tex]
Is that only a half of a sleeping parabola or is it a full one?
Does a radical only have a +/- sign in front of it when it takes this form?:
[tex]y^{2}=x \rightarrow y=\pm \sqrt{x}[/tex]
So, is there a rule that when you square root something the +/- sign always goes in front of it? If you do not square root something, the square rooted term is only positive and does not contain the +/- sign?
Thanks in advance.
For example the equation: [tex]y=\sqrt{x}[/tex]
Is that only a half of a sleeping parabola or is it a full one?
Does a radical only have a +/- sign in front of it when it takes this form?:
[tex]y^{2}=x \rightarrow y=\pm \sqrt{x}[/tex]
So, is there a rule that when you square root something the +/- sign always goes in front of it? If you do not square root something, the square rooted term is only positive and does not contain the +/- sign?
Thanks in advance.
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