SOLUTION: Express y as a function of x. What is the domain? a) log3+log y = log(x+2) - logx b)logy-2+logx-log(x+1) = 0 c) log4y=x+log4 Can you please help me out? thanks so much in adva

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Express y as a function of x. What is the domain? a) log3+log y = log(x+2) - logx b)logy-2+logx-log(x+1) = 0 c) log4y=x+log4 Can you please help me out? thanks so much in adva      Log On


   

Question 742187: Express y as a function of x. What is the domain?
a) log3+log y = log(x+2) - logx
b)logy-2+logx-log(x+1) = 0
c) log4y=x+log4
Can you please help me out? thanks so much in advance:)
Can you show the work too because I will understand better thankyou:)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Looking at question a:

a) log3+log y = log(x+2) - logx
log(3y)=log((x+2)/x)
Arguments must be equal.
3y=(x+2)/x
y=%28x%2B2%29%2F%283x%29

Domain is x%3C0 and x%3E0.
x must be equal 0, becaus denominator of 3x=3*0=0 and division by 0 is not allowed.