1. horizontal asymptotes ln(x)
2. horizontal asymptotes log2(x)
3. horizontal asymptotes log3(x)
4. horizontal asymptotes log4(x−1)
5. horizontal asymptotes 2+log2(4+x)
6. horizontal asymptotes ln(e+x)
7. horizontal asymptotes −log2(x−1)
8. horizontal asymptotes log2(2+x)−4
9. horizontal asymptotes 2log10(x)
10. horizontal asymptotes 2log2(2+x)−1