Can someone show me how to do a problem like this...

f(x) = x^2 + 3x - 40

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x^2 - 4x - 12

Thanks for any help!

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- December 14th 2009, 09:07 AMKarlosKGiven the function... find the domain
Can someone show me how to do a problem like this...

f(x) = x^2 + 3x - 40

------------------

x^2 - 4x - 12

Thanks for any help! - December 14th 2009, 10:11 AMsongoku
Hi KarlosK

You can learn to type math equation here http://www.mathhelpforum.com/math-he...-tutorial.html

Find the domain means that you find all possible values of x. To find all possible values of x, you need to know the values of x that make the function undefined.

For rational function, the function will be undefined if the denominator .....