- #1
scientifico
- 181
- 0
Homework Statement
3 - 3^(x+1) < 5^x - 15^x
3(1-3^x) < 5^x(1-3^x)
Do I have to impose 1-3^x > 0 ?
It results x<0 and x>log(5,3) but book has written 0 < x < log(5,3) where did I wrong ?