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How would I find the domain and range of (2)/(x^22x3)? Is the domain x=1 x=3
 9 months ago
 9 months ago
How would I find the domain and range of (2)/(x^22x3)? Is the domain x=1 x=3
 9 months ago
 9 months ago

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cwrw238Best ResponseYou've already chosen the best response.1
try factoring the denominator what values of x are not possible?
 9 months ago

cwrw238Best ResponseYou've already chosen the best response.1
the domain is all possible values of x
 9 months ago

cwrw238Best ResponseYou've already chosen the best response.1
so 1 and 3 are not in the domain
 9 months ago

mathstudent55Best 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.
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
oh so all reals except x=1 and x=3 for the domain
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
ok thanks! but what about the range?
 9 months ago

cwrw238Best ResponseYou've already chosen the best response.1
the range is all possible values of f(x)
 9 months ago

cwrw238Best ResponseYou've already chosen the best response.1
so can you figure that out?
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
um how would i set it up?
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
dang ok.. don't solve it for me but how would i go about that?
 9 months ago

cwrw238Best 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
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
Couldn't I find the inverse of the function and then find the domain?
 9 months ago

cwrw238Best ResponseYou've already chosen the best response.1
yes the inverse of the function has domain which equals range of the function
 9 months ago

WiseOlMooseyBest ResponseYou've already chosen the best response.0
ok thanks for your time and patience!
 9 months ago
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