sorry but need help again with finding domain with

y= ln (2x-12)

in interval notation. the ln throws me off

Question

sorry but need help again with finding domain with

y= ln (2x-12)

in interval notation.  the ln throws me off

amistre64 · Answer

notice that it is of the ln(x) family

amistre64 · Answer

get the 2 off there by dividing it out to see how "x" itself is modified

amistre64 · Answer

y = ln[ 2(x-6) ]  right?

anonymous · Answer

ok i see

amistre64 · Answer

the domain is the same as the domain for ln(x), but add 6

amistre64 · Answer

dom ln(x) = (0,inf)
                  +6+6
                  ------
                   (6,inf)  right?

anonymous · Answer

thats what i got, however for some reason my answerkey has (2, infinty)????? could be error?

amistre64 · Answer

could be, or i could have not remembered right ... both are highly probable

amistre64 · Answer

2x-12 > 0

2x > 12

x > 6

amistre64 · Answer

if you got a teacher, ask about it; or wait around for someone smater than me :)

anonymous · Answer

lol thanks i appreciate it your time