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February 8th, 2013, 06:10 AM   #1
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mathematics - Q 7

Hi all

Can please check my answer : -



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February 8th, 2013, 08:19 AM   #2
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Re: mathematics - Q 7

No, your applications of the rules of differentiation in places is incorrect. I would write:



Now differentiate with respect to



Differentiate again:



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February 8th, 2013, 10:16 AM   #3
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Re: mathematics - Q 7

thanks so much
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