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 August 30th, 2013, 01:42 AM #1 Senior Member   Joined: Oct 2012 Posts: 460 Thanks: 0 (sin(x)+log(x)+sqrt(x))' Dear All! Please, can U help me with :$f(x)=(sin(x)+log(x)+\sqrt(x))$ Is that the right graph of the first derivative? http://www.wolframalpha.com/input/?i=1% ... efs_*Math- Many thanks!
 August 30th, 2013, 05:34 AM #2 Math Team   Joined: Sep 2007 Posts: 2,409 Thanks: 6 Re: (sin(x)+log(x)+sqrt(x))' What, exactly, is your question? You surely know, from questions you have posted before, that the derivative of sin(x) is cos(x), the derivative of log(x) is 1/x, and the derivative of $\sqrt{x}= x^{1/2}= (1/2)x^{-1/2}$. As far as the graph is concerned, calculate those at various values of x to see what happens.

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