J jself New member Joined Oct 27, 2006 Messages 9 Dec 8, 2006 #1 The problem is y= x / e^x + 1 = (e^x + 1)(x) - (x) (e^x) / (e^x + 1)^2 =(xe^x +x) -(xe^x)/ (e^x+1)^2 x/(e^x +1)^2 I am not sure if I am working it out correctly. Please help me figure out what I am doing wrong.
The problem is y= x / e^x + 1 = (e^x + 1)(x) - (x) (e^x) / (e^x + 1)^2 =(xe^x +x) -(xe^x)/ (e^x+1)^2 x/(e^x +1)^2 I am not sure if I am working it out correctly. Please help me figure out what I am doing wrong.
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,325 Dec 8, 2006 #2 Re: Finding the derivative jself said: (e^x + 1)(x) - (x) (e^x) / (e^x + 1)^2 Click to expand... Whoops! It should be: (e^x + 1)(1) - (x) (e^x) / (e^x + 1)^2
Re: Finding the derivative jself said: (e^x + 1)(x) - (x) (e^x) / (e^x + 1)^2 Click to expand... Whoops! It should be: (e^x + 1)(1) - (x) (e^x) / (e^x + 1)^2
