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LOGS Maths

  • 05-12-2015 05:55PM
    #1
    Kelly090
    Registered Users, Registered Users 2 Posts: 80 ✭✭


    I'm doing logs at the moment and getting stuck on these questions:
    Log20-log4
    I know you have to divide as its subtraction we are dealing with here, but divide what? Thanks for the help!


Comments

  • #2
    Blue giant
    Registered Users, Registered Users 2 Posts: 1,336 ✭✭✭Blue giant


    Kelly090 wrote: »
    I'm doing logs at the moment and getting stuck on these questions:
    Log20-log4
    I know you have to divide as its subtraction we are dealing with here, but divide what? Thanks for the help!

    It's basically just log(20/4)=log(5)


  • #3
    Kelly090
    Registered Users, Registered Users 2 Posts: 80 ✭✭Kelly090


    Blue giant wrote: »
    It's basically just log(20/4)=log(5)

    Thank you! One more question...!
    Log4 + 2Log3 -Log6???


  • #4
    Blue giant
    Registered Users, Registered Users 2 Posts: 1,336 ✭✭✭Blue giant


    Kelly090 wrote: »
    Thank you! One more question...!
    Log4 + 2Log3 -Log6???

    2log(3) = log(3^2) from your table books.
    Log(4) + Log(9) = log(4 x 9) = log(36)
    log(36) - log(6) = log(36/6) = log(6)
    If you use your table books you should be able to solve any of these problems.


  • #5
    Kelly090
    Registered Users, Registered Users 2 Posts: 80 ✭✭Kelly090


    Blue giant wrote: »
    2log(3) = log(3^2) from your table books.
    Log(4) + Log(9) = log(4 x 9) = log(36)
    log(36) - log(6) = log(36/6) = log(6)
    If you use your table books you should be able to solve any of these problems.

    Thank you so much. You are a great help


  • #6
    Kelly090
    Registered Users, Registered Users 2 Posts: 80 ✭✭Kelly090


    Blue giant wrote: »
    2log(3) = log(3^2) from your table books.
    Log(4) + Log(9) = log(4 x 9) = log(36)
    log(36) - log(6) = log(36/6) = log(6)
    If you use your table books you should be able to solve any of these problems.

    Thank you so much. You are a great help


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