If an investment grows by 10%10\%10% continuously, how long until it triples?
ln(3)0.1\frac{\ln(3)}{0.1}0.1ln(3)
ln(0.1)3\frac{\ln(0.1)}{3}3ln(0.1)
3⋅ln(0.1)3 \cdot \ln(0.1)3⋅ln(0.1)
30.1\frac{3}{0.1}0.13