Use the change of base formula to write log4(9)\log_{4}(9)log4(9) using natural logarithms.
ln(4)/ln(9)\ln(4) / \ln(9)ln(4)/ln(9)
ln(9)/ln(4)\ln(9) / \ln(4)ln(9)/ln(4)
ln(9)−ln(4)\ln(9) - \ln(4)ln(9)−ln(4)
ln(4)+ln(9)\ln(4) + \ln(9)ln(4)+ln(9)