January 30th, 2010, 12:44 PM  #1 
Senior Member Joined: Nov 2009 Posts: 169 Thanks: 0  Help with Differentiating
F (x) = can some one explain what F(x) is ,is not the same as f (x), is it? 
January 30th, 2010, 12:58 PM  #2 
Guest Joined: Posts: n/a Thanks:  Re: Help with Differentiating
It's the antiderivative (think integration). To find f(x), you need to differentiate. Since F(x) is the antiderivative, then F'(x)=f(x) Try logarithmic differentiation. Log of both sides: Derivative of both sides: But, remember what y is and sub it in: 
January 30th, 2010, 09:29 PM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 407  Re: Help with Differentiating Hello, 450081592! They can use any letter to represent a function: [color=beige]. . [/color] Quote: Are you aware that there is a formula for this problem? We have an exponential function and its base is not  

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