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January 25th, 2012, 02:43 AM  #1 
Member Joined: Jan 2012 Posts: 82 Thanks: 0  Range of values of x and y
Hi! I need to find the range of values of x and y for which the expression on eash side of this equation are defined. In(2y) = In(x1)+In(4x)x Can anyone help? Thanks 
January 25th, 2012, 05:50 AM  #2 
Member Joined: Jan 2012 Posts: 80 Thanks: 0  Re: Range of values of x and y
For a logarithm to produce real values the input expression must be greater than 0. So we have: And: and 
January 26th, 2012, 12:44 AM  #3 
Member Joined: Jan 2012 Posts: 82 Thanks: 0  Re: Range of values of x and y
Thank you so much flying pigeon! You have a nice day too! 

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