Input and output resistance of common collector

[Sutitan]

Homework Statement

I don't understand how the website below got the equations for the output and input resistances

Homework Equations

http://www.statemaster.com/encyclopedia/Common-collector

 

[The Electrician]

Have a look at this:

http://people.seas.harvard.edu/%7Ejones/es154/lectures/lecture_3/bjt_amps/bjt_amps.html

Does that help?

 

[Sutitan]

it does a little.

I figured out my problem. it had to do with the resistance reflection rule.

thanks for the reply though