How Do You Calculate Logarithms with Base 2 and Perform Decibel Calculations?

[dervast]

logarithms and decibels please

Hi i need some good tutorials for the logarithmsI(especialy for logarithms with base 2)
and how i can calculate logarithms with base 2 when i have a simple calculator.
Also i need some decibel tutorials that can help me understand how i can perform calculations using decibels

 

[dervast]

any kind of help please?

 

[berkeman]

I did a google search on "logarithm tutorial" and got lots of good-looking hits. Do any of those help? (Just re-do the search, and include the quotes.)

 

[Dick]

Ok, I don't know about tutorials but log_a(x)=log_e(x)/log_e(a). If you don't like e you can substitute 10.