Need Help. What is the Domain?. Last problem I need to finish, please help. The domain. x can not equal 12 or -12 since fractions can't have 0 in the bottom just look for a number that makes the bottom equal 0 and thats what the variable can't equa
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Need Help. What is the Domain?

Last problem I need to finish, please help

Tags: math
The domain
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Views: 2383
Favorited: 1
Submitted: 09/02/2014
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#4 - fuckoutthewhey (09/02/2014) [+] (1 reply)
x can not equal 12 or -12
since fractions can't have 0 in the bottom just look for a number that makes the bottom equal 0 and thats what the variable can't equal
#2 - rushingox (09/02/2014) [+] (2 replies)
Since its division, the domain cannot be a number that makes the denominator equal to zero.

to find out what "X" cannot be, we must remove the square(the second power above the X) after setting the equation to zero.

x^2 - 144 = 0

isolate the variable "X" from the number (move on of them over)

x^2 = 144

since the exponent is "2", we will square root each side. ( if it were 3, we third root, and so on, so forth)

square root of x^2 = x
square root of 144 = 12

so X=12

the domain (X) cannot equal 12 , so your answer would be:

(infinity,12)U(12,infinity)
everything below 12 and every thing above 12



User avatar #9 - cuntism (09/03/2014) [+] (2 replies)
Waffle waffle potato pie

That's the only answer my brain will give me
User avatar #11 to #10 - cuntism (09/03/2014) [-]
Waffle waffle potato pea,
That's the only answer my brain'll give me,
Rosemary mint sage thyme,
I hope this satisfies your need for a rhyme
User avatar #12 - lordjordn (09/03/2014) [-]
Domain meaning what can x NOT equal

so using knowledge of the internet we know something/0 = kabooom

so
x^2 - 144 = 0
x^2 = 144 x = +/- 12
so x CANNOT be + or - 12
User avatar #8 - tidaldiamond (09/02/2014) [-]
-12<x<12
#6 - nmurphy (09/02/2014) [-]
RVB 12
User avatar #1 - mnay (09/02/2014) [-]
R/x=-12,12
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