Solution 11715: Calculating the Inverse Natural Log on the TI-89 Family, TI-92 Family or Voyage™ 200 Graphing Calculators.
How do I calculate the inverse natural log of a number on my TI-89 family, TI-92 family or Voyage 200 graphing calculator?
The examples listed below will display how to calculate the inverse natural log on the TI-89 family, TI-92 family or Voyage 200 graphing calculators.
Example 1: Find the inverse natural log of 1.60944
• Press [Green Diamond] [ex][1][.][6][0][9][4][4][)] [Green Diamond][ENTER].
The answer 5.00001 will be displayed.
Example 2: Find the inverse natural log of 2.5
• Press [Green Diamond] [ex][2][.][5] [)] [Green Diamond][ENTER].
The answer 12.1825 will be displayed.
Example 3: Find the inverse natural log of 1
• Press [Green Diamond] [ex][1] [)] [Green Diamond][ENTER].
The answer 2.71828 will be displayed.
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.