Today we started logarithms and the easiest way to explain what a logarithm is to call it the inverse of an exponent. http://www.purplemath.com/modules/logs.htm has an animation that does an exellent job of describing the relation between exponents and logarithms.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPHd1B0JzgU31rHhnnQOb7Phcjivlx1wc2EKZt6SjBtDyJLa0yFUfFCiyDzJMaZjlQPvTB5J4ZFvpv91zE_x9huUWkVNOyQcDQ4dnY5L1BTivP7nsmDMnuJkOvOa4vqWSxzV7vVbwkVvRz/s320/march2309exponentialfunctionslogarithmsintro_1.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFyOG4w0qjbwjsKg9L8vSM9iSq-jgy_jbGIR5YNUAe3Jpim0j67UtYOjvoiSwvwrk1rg1RqIfmDkViXfAeQQAXKKAg_FUBwfhy1mdfbsKKiQ9HZl7ZKEvRc3wM9zWFwPobUyORN2MVsFVb/s320/march2309exponentialfunctionslogarithmsintro_2.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2VUvDNJPYbQ5WWqq0bTSS8idB5s2rJqLHrbd4komdL1wd5hG87rGsrjcsJat720LnB8HQWSaNqdPxOYafaxZVxfp6nmEDNk0t8f8AGpxz85f5Z2fivkTN3QvACPbN0VYqK2QUN-rZbgH3/s320/march2309exponentialfunctionslogarithmsintro_3.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxE19Yr9THr02BIlwJwzQxqxvjXob195nfsNdHU95yq3cBROTMU8f7ZJ2RGiakPTuNOTHMwDpaoc2iX9ZM0J1D44yvMjWIHXidHeqvmeuneFSCN3NTnpoGxvBdAKDq7g4fajDeURj-nGKn/s320/march2309exponentialfunctionslogarithmsintro_4.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPHd1B0JzgU31rHhnnQOb7Phcjivlx1wc2EKZt6SjBtDyJLa0yFUfFCiyDzJMaZjlQPvTB5J4ZFvpv91zE_x9huUWkVNOyQcDQ4dnY5L1BTivP7nsmDMnuJkOvOa4vqWSxzV7vVbwkVvRz/s320/march2309exponentialfunctionslogarithmsintro_1.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFyOG4w0qjbwjsKg9L8vSM9iSq-jgy_jbGIR5YNUAe3Jpim0j67UtYOjvoiSwvwrk1rg1RqIfmDkViXfAeQQAXKKAg_FUBwfhy1mdfbsKKiQ9HZl7ZKEvRc3wM9zWFwPobUyORN2MVsFVb/s320/march2309exponentialfunctionslogarithmsintro_2.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2VUvDNJPYbQ5WWqq0bTSS8idB5s2rJqLHrbd4komdL1wd5hG87rGsrjcsJat720LnB8HQWSaNqdPxOYafaxZVxfp6nmEDNk0t8f8AGpxz85f5Z2fivkTN3QvACPbN0VYqK2QUN-rZbgH3/s320/march2309exponentialfunctionslogarithmsintro_3.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxE19Yr9THr02BIlwJwzQxqxvjXob195nfsNdHU95yq3cBROTMU8f7ZJ2RGiakPTuNOTHMwDpaoc2iX9ZM0J1D44yvMjWIHXidHeqvmeuneFSCN3NTnpoGxvBdAKDq7g4fajDeURj-nGKn/s320/march2309exponentialfunctionslogarithmsintro_4.png)
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