my test next week will be dealing wiht a lot of logarithm with different bases. the teacher suggest buying a calculator taht can do it to save time. upto this point i have just learned how to do log(base 10) on the ti92. please show me how to do something liek log(base 7) of 23213. i did search in the user manual but they only show how to do base 10, which is typing log(x) thanks alot guys

yeah its right..go to this link and a bit down is the change of base formula....b can be anything...10 or e if you are using a calculator http://www.ltcconline.net/greenl/courses/154/logexp/explogeq.htm