math need help urgent
posted by zach w on .
find the domain
f(x)=x/x8,g(x)=7/x
solve the following exponential equation equation exact answers only
3e x1 = 2+e^x1

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^x1 = 2+e^(x1)
3e^x  e^x/e = 2+1
e^x (31/e) = 3
e^x = 3/(31/e)
x = ln3e  ln(3e1)
If, however, you meant
3e^(x1) = 2+e^(x1)
2e^(x1) = 2
e^(x1) = 1
x1 = 0
x = 1
If something else, then you'd better repost with proper parentheses.