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Mathematics 15 Online
OpenStudy (bekkah323):

find the domain f(x)=5/x-4

OpenStudy (rmrjr22):

when does the f(x) become 0?

OpenStudy (rmrjr22):

in fractions the denominator determines the domain

OpenStudy (rmrjr22):

set x-4= 0 and you will find it

OpenStudy (bekkah323):

where did the 5 go?

OpenStudy (bekkah323):

oh nvm

OpenStudy (rmrjr22):

did you find it?

OpenStudy (bekkah323):

4,

OpenStudy (bekkah323):

the answer in my book says x is a real number and x can't equal 4,

OpenStudy (bekkah323):

is that the same thing?

OpenStudy (rmrjr22):

yes, otherwise it will an undefined function.. and you cant do anything with that

OpenStudy (rmrjr22):

did you get it @bekkah323

OpenStudy (bekkah323):

yes, thanks

OpenStudy (rmrjr22):

welcome :)

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