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zhengcl86
 3 years ago
determine the domain of \[f(x)=\sqrt{9x ^{2}}\]
zhengcl86
 3 years ago
determine the domain of \[f(x)=\sqrt{9x ^{2}}\]

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henryrodriguez713
 3 years ago
Best ResponseYou've already chosen the best response.1What's your question? haha

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0determine the domain \[f(x)=\sqrt{9x ^{2}}\]

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1Do you know what the question is asking for? i.e. do you know what the domain of a function is?

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0the question just says determine the domain of \[f(x)=\sqrt{9x ^{2}}\]

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1Yes I know. But do YOU know what it means? What is the "domain"

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0oh lol isnt it a set of functions with all possible inputs from neg to pos or infinite?

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0wouldn't i be breaking down the square root of 9  x squared (3x)(3+x)

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1It is all the values of x that you could put into your function to get an output value. So a better question would be to ask yourself what values of x can I put into the function that makes it DNE

henryrodriguez713
 3 years ago
Best ResponseYou've already chosen the best response.1dw:1358900569521:dwdw:1358900892255:dw

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1DNE is 'does not exist' i.e refers to a part on the functions graph that cannot be determined, because it simply does not exist. :) Basically you need to watch out for square roots, logarithms and denominators equalling zero. In your case, you have a square root, and as @henryrodriguez713 pointed out, you CANNOT have a negative number under the square root.

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1358901287263:dw

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1To get rid of the square root, simply square both sides of the equation.

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0oh since i can't have a negative number, the answer would be false correct? its been 3 years since i've been in school xD

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1The function does not exist for x values less than 3 and more than 3

baldymcgee6
 3 years ago
Best ResponseYou've already chosen the best response.1dw:1358901513506:dw

henryrodriguez713
 3 years ago
Best ResponseYou've already chosen the best response.1Haha. Don't worry if you haven't been in school for three years. All that really matters is that you're learning it. :D

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1358901727152:dw

zhengcl86
 3 years ago
Best ResponseYou've already chosen the best response.0would this be the final product answer?
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