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November 3rd, 2011, 03:27 PM  #1 
Newbie Joined: Sep 2011 Posts: 13 Thanks: 0  solving logarithmic equations
The problem is (x^2)e^4x + (7x)e^4x  e^4x I took e^4x out and I'm left with e^4x(x^2+7x1) How do I solve from here? I can't figure out how to factor to get my smaller and larger values. 
November 3rd, 2011, 04:02 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,753 Thanks: 2136 
If you were asked to factor the expression, you've already done enough. As there are no logarithms in the expression, why does the topic title refer to logarithmic equations?

November 3rd, 2011, 04:12 PM  #3 
Newbie Joined: Sep 2011 Posts: 13 Thanks: 0  Re: solving logarithmic equations
Because that is the section of the chapter we are in. We are supposed to use logs to solve I think. We have to have two answers: a smaller value and larger value.

November 3rd, 2011, 05:00 PM  #4  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Re: solving logarithmic equations Quote:
 
November 3rd, 2011, 05:20 PM  #5 
Newbie Joined: Sep 2011 Posts: 13 Thanks: 0  Re: solving logarithmic equations
It is supposed to be equal to zero. Sorry, I forgot to put it.

November 3rd, 2011, 11:42 PM  #6 
Senior Member Joined: Aug 2011 Posts: 334 Thanks: 8  Re: solving logarithmic equations
The solutions of an equation of the form : f(x) g(x) = 0 are the solutions of f(x) =0 and the solutions of g(x) = 0 insofar as solution(s) exist. 
November 4th, 2011, 01:38 AM  #7 
Senior Member Joined: Oct 2011 From: India ???? Posts: 224 Thanks: 0  Re: solving logarithmic equations
It must be noted that has no solutions. Use quadratic formula. 

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equations, logarithmic, solving 
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