find the domain of the function

f(X) = ln(2-x)

Question

find the domain of the function

f(X) = ln(2-x)

anonymous · Answer

domain of this function would be x<=2 since log is not defined for negative values

anonymous · Answer

so it is (- infinity, 2]

anonymous · Answer

got it jsy? or u need more clarification? :):)

anonymous · Answer

sry *jay

anonymous · Answer

Are you there???? @jay

amistre64 · Answer

ln is not define for zero either....when does ln(x) = 0?

anonymous · Answer

log 0 = 1 am i right?

anonymous · Answer

if its so, then the answer is (-infinity, 2)

amistre64 · Answer

no...sorry :)  thats better..

think of it this way.  the log points to an exponent:

log2(8) = 3

the exponent is "3"  the base is to "2"

2^3 = 8

now tell me....

2^? = 0 ??

amistre64 · Answer

log2(0) = ?

anonymous · Answer

then my second option is correct? isn't it? and not the first one...

amistre64 · Answer

(-inf,2) is correct :)

anonymous · Answer

hmm.... yay amistre:)

anonymous · Answer

i think jay is not here

amistre64 · Answer

jay was just the catalyst.... math goes on without him lol

anonymous · Answer

:)but i think this shud help him

anonymous · Answer

i definitely see that as an option thank u so much

anonymous · Answer

you 're welcome:) any more questions??

anonymous · Answer

$$2-x \ge0$$$$x \le 2$$
hence the domain is $$[-\infty, 2)$$