Results 1 to 2 of 2

Math Help - Log Problems.

  1. #1
    Newbie
    Joined
    Nov 2009
    Posts
    4

    Log Problems.

    I cant figure out these problems if you could help
    me on any problem thatd be great:
    1) e^.5x^2-4 = 0
    2)log6x+log6x+9=2
    3)e^(3x^2) -2=0
    4)1.05^x-1/.07 = 1000
    5)log3(x^2-9) -log3(x+3) =1
    6)log5(x-2)=3
    7)log5(x^2+5x+6)-log5(x+3)+log5(x-1) =log5(4)
    Last edited by mr fantastic; May 31st 2010 at 06:08 PM. Reason: Edited post title (of course help please is wanted!)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    28
    Quote Originally Posted by mathstudent88 View Post
    3)e^(3x^2) -2=0

    I think I know this one

     e^{3x^2} -2=0

     e^{3x^2} =2

     3x^2 =\ln 2

     x^2 =\frac{\ln (2)}{3}

     x =\sqrt{\frac{\ln (2)}{3}}

    What is your guess? How do you know if my answer is correct?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: October 3rd 2011, 05:35 AM
  2. binomial problems/normal problems
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 19th 2010, 11:46 PM
  3. binomial problems as normal problems
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 19th 2010, 11:41 PM
  4. Problems with integration word problems
    Posted in the Calculus Forum
    Replies: 5
    Last Post: April 25th 2010, 05:39 PM
  5. Help thease problems problems
    Posted in the Geometry Forum
    Replies: 2
    Last Post: April 1st 2008, 11:03 AM

Search Tags


/mathhelpforum @mathhelpforum