Hi,

I can not figure out the answer to the following problem, can someone please explain?

f(x)= X+4/X-3

What is it's domain?

Thanks!

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- March 19th 2007, 09:45 PMdasanidomain of a function
Hi,

I can not figure out the answer to the following problem, can someone please explain?

f(x)= X+4/X-3

What is it's domain?

Thanks! - March 19th 2007, 09:49 PMJhevon
You can think of the domain of a function as all x-values for which the function is defined. here we see there is a problem at x = 3. if x = 3, the denominator becomes zero and the function undefined. thus the domain of this function is given by:

dom(f) = all real x where x not=3

or

dom(f) = {all x| x not=3}

or

dom(f): (-infinity,3)U(3,infinity) - March 19th 2007, 10:02 PMdasani
Thank you so much for your quick reply