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how to find the domain

 Nov 7, 2014

Best Answer 

 #1
avatar+118724 
+5

The domain is just all the possible values that x can have for a specific function or relation.

For instance

$$y=\frac{7x^2-3}{x-4}$$

 

you cant divide by 0 so 

$$\\x-4\ne 0\\
x\ne 4$$

but x can have any other value so the domain is 

x is in the set of reals where x is not equal to 4

$$x\in R $ where $ x\ne 0$$

 Nov 7, 2014
 #1
avatar+118724 
+5
Best Answer

The domain is just all the possible values that x can have for a specific function or relation.

For instance

$$y=\frac{7x^2-3}{x-4}$$

 

you cant divide by 0 so 

$$\\x-4\ne 0\\
x\ne 4$$

but x can have any other value so the domain is 

x is in the set of reals where x is not equal to 4

$$x\in R $ where $ x\ne 0$$

Melody Nov 7, 2014

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