math
posted by Adam .
For the curve y = log(x+3)
determine the following:
a) asymptotes, if any.
b) intercepts, if any.
c) domain and range

math 
Reiny
you should be familiar with the function
y = log x , which has the yaxis as an asymptote
this one is simply moved to the left 3 units
so the vertical asymptote is x = 3
intercepts :
for yintercepts let x = 0  y = log3
for xintercepts let y = 0
then log(x+3) = 0
we know log 1 = 0, so x+3 = 1
x = 2
domain: from our definition of logs, x+3 > 0 > x > 3
from knowing the basic graph, the range is any real number.
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