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    claire3158's Avatar
    claire3158 Posts: 4, Reputation: 1
    New Member
     
    #1

    Jul 29, 2009, 04:07 PM
    Calculus Logs
    1. Log(2)5 +log(2)(X^2-1) - log(2) (X-1)



    2. 3^2log(3)5



    3. 2log(10) root of X +3log(10) X^1/3



    Solving for the indicated variable... solve this equation for A..


    4.x/a + y/b + z/c=1
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
     
    #2

    Jul 29, 2009, 04:35 PM
    4.
    The LCD is abc. Multiply through by abc:







    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #3

    Jul 30, 2009, 10:45 AM

    No need to post on different topics... nor twice in the same topic

    https://www.askmehelpdesk.com/math-s...gs-381283.html

    Anyway, I wasn't aware of that, and I already answered it there.

    galactus, the question was 'solving for a', though I believe it is 'making a the subject of formula'.



    Send everything except x/a on the right.



    Make as a single fraction:



    'Cross multiply everything' or invert everything:



    Then, multiply by x:

    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
     
    #4

    Jul 30, 2009, 10:57 AM
    So right:o

    I solved for x. Oh well, the method is pretty much the same.

    I tried giving you a greenie, but of course, it won't let me. I have been spreading it around, but it still won't allow me to give you a greenie. :confused:
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #5

    Jul 30, 2009, 10:59 AM

    Same thing here for the 'Derivatives' thread... :( Your recent greenie on Survivorboi's thread I gave you prevents me from giving you another one now. I have to greenie some more people...
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #6

    Jul 30, 2009, 11:06 AM
    I don't like that. It's bogus, man:)

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