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WiseOlMoosey
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How would I find the domain and range of (2)/(x^22x3)? Is the domain x=1 x=3
 one year ago
 one year ago
WiseOlMoosey Group Title
How would I find the domain and range of (2)/(x^22x3)? Is the domain x=1 x=3
 one year ago
 one year ago

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cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
try factoring the denominator what values of x are not possible?
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
x=1 and x=3
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
the domain is all possible values of x
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
so 1 and 3 are not in the domain
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
The domain is the values that x can have. y = 2/(x^2  2x  3) has a denominator. Since division by zero is not allowed, you need to find which values of x would make the denominator zero. To do that, solve (which you did) x^2  2x  3 = 0 (x  3)(x + 1) = 0 x = 3 or x = 1 These are the value of x that must be excluded from the domain, so the domain is all real numbers except x = 3 and x = 1.
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
oh so all reals except x=1 and x=3 for the domain
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
ok thanks! but what about the range?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
the range is all possible values of f(x)
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
so can you figure that out?
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
um how would i set it up?
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
dang ok.. don't solve it for me but how would i go about that?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
well for a start the values of f(x) corresponding to x=3 or 1 will be excluded
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
Couldn't I find the inverse of the function and then find the domain?
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
@cwrw238
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
yes the inverse of the function has domain which equals range of the function
 one year ago

WiseOlMoosey Group TitleBest ResponseYou've already chosen the best response.0
ok thanks for your time and patience!
 one year ago
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