Education Technology

Solution 11708: Calculating Natural Logarithm on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.

How do I calculate natural log on the TI-89 Family, TI-92 Family, and Voyage 200 graphing calculators?

The following examples will demonstrate how to compute natural logs on the TI-89 Family, TI-92 Family, and Voyage 200 graphing calculators:

Note: On the TI-92, TI-92 Plus, and Voyage 200, use the [LN] key. For the TI-89 and TI-89 Titanium, use the [2nd] [LN] keys.

Natural log of 100. (4.6051.......)
• Press the [LN] key and input 100.
• Press the [ENTER] key.

Natural log of 35. (3.5553.....)
• Press the [LN] key and input 35.
• Press the [ENTER] key.

Natural log of 73. (4.2904.......)
• Press the [LN] key and input 73.
• Press the [ENTER] key.

Please see the TI-89 family, TI-92 family, and Voyage 200 guidebooks for additional information.