Natural Logarithms |
Rules Familiar.....?
Example #1
Practice #1
Remember: To cancel out the natural logarithm, make sure to use base e on each side.
Very Similar to how we know to simplify down!
Example #2
Practice #2
Reminder: Make sure to get rid of the base e by taking the ln of each side within the problems! Look below to see where the buttons of base e and ln are on your calculators.
Example #3
Practice #3
ln -- left column and third button up
Base e -- second ln button
Base e -- second ln button
Special Investment Problem
An initial investment of $100 is now valued at $149.18. The interest rate is 8%, compounded continuously. How long has the money been invested?