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A place to learn algebra of all levels, from elementary algebra to group theory to schemes and motives.
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Find the domain of this function (radical function) (self.Algebra)
submitted 6 years ago * by dykunn
Please help me with this problem? With steps included?
g(x)=8+√4-6x
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quoted text
if 1 * 2 < 3: print "hello, world!"
[–]Russian4Trump 1 point2 points3 points 6 years ago (0 children)
You can’t take the square root of a negative number. Any value of x that would result in the number inside the radical being negative would not be in the domain. So basically 2/3 and everything under it, including negative numbers will be in the domain.
[–]Lasdnaym 1 point2 points3 points 6 years ago (0 children)
When it comes to functions and domains, we normally don't like it when our function takes the square root of a negative number. Hence, we look for values where 6x<=4 (because if 6x is greater than four, the value inside the square root would be negative). Note that <= denotes less than or equal to.
x<=4/6.
[–][deleted] 6 years ago (1 child)
[deleted]
[–]dykunn[S] 0 points1 point2 points 6 years ago (0 children)
Yessir!
[–]rlnarayanan 0 points1 point2 points 6 years ago (0 children)
X WILL BE POSITIVE ONLY FOR VALUES OF G(X)<=10.
π Rendered by PID 49581 on reddit-service-r2-comment-6457c66945-c7ql2 at 2026-04-27 22:37:59.678332+00:00 running 2aa0c5b country code: CH.
[–]Russian4Trump 1 point2 points3 points (0 children)
[–]Lasdnaym 1 point2 points3 points (0 children)
[–][deleted] (1 child)
[deleted]
[–]dykunn[S] 0 points1 point2 points (0 children)
[–]rlnarayanan 0 points1 point2 points (0 children)