Posted by **zach w** on Tuesday, November 27, 2012 at 1:54am.

find the domain

f(x)=x/x-8,g(x)=-7/x

solve the following exponential equation equation exact answers only

3e x-1 = 2+e^x-1

- math need help urgent -
**Steve**, Tuesday, November 27, 2012 at 4:28am
domain of any rational function is all reals except where the denominator is zero.

dom(f) = all reals except x=8

dom(g) = all reals except x=0

If you meant

3e^x-1 = 2+e^(x-1)

3e^x - e^x/e = 2+1

e^x (3-1/e) = 3

e^x = 3/(3-1/e)

x = ln3e - ln(3e-1)

If, however, you meant

3e^(x-1) = 2+e^(x-1)

2e^(x-1) = 2

e^(x-1) = 1

x-1 = 0

x = 1

If something else, then you'd better repost with proper parentheses.

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