Homework SourseFind the domain of each function fx88ex Enter your answers u
Find the domain of each function f(x)=8/8+e^x. Enter your answers using interval notation.
I got as far as 8+e^x = 0
-8 -8
e^x =-8
ln ln
x = ?
but I can\'t take the ln of -8?
I got as far as 8+e^x = 0
-8 -8
e^x =-8
ln ln
x = ?
but I can\'t take the ln of -8?
Solution
f(x)=8/(8+e^x)
Denominator can\'t be Zero
Therefore
8+e^x = 0
Therefore
e^x = - 8
But it is Not Possible as e^x always +ve
Therefore
Domain
(- , )
