I'm having difficulty proceeding from there to get the second derivative. The answer is
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Originally Posted by Archduke01 I'm having difficulty proceeding from there to get the second derivative. The answer is Use the product rule.
Originally Posted by Prove It Use the product rule. Hi again, using the product rule I get; I'm not sure if it's correct or not but regardless I don't know how to simplify the above expression.
Originally Posted by Archduke01 Hi again, using the product rule I get; I'm not sure if it's correct or not but regardless I don't know how to simplify the above expression. Yes, now you can take out common factors Now take out common factors.
Originally Posted by Prove It What happened to the 6x?
Originally Posted by Archduke01 What happened to the 6x? I took out a common factor of 3, which leaves the .
Originally Posted by Prove It I took out a common factor of 3, which leaves the . The common factor of 3 was only common with ? Why did you take out a factor 3 specifically?
Originally Posted by Archduke01 The common factor of 3 was only common with ? Why did you take out a factor 3 specifically? Read it carefully. The first term is has a factor of 3. You will see that the second term is , which also has a factor of 3. Therefore I can take out 3 as a common factor.
Originally Posted by Prove It Read it carefully. The first term is has a factor of 3. You will see that the second term is , which also has a factor of 3. Therefore I can take out 3 as a common factor. Oh right, I see it. I missed it originally because I had already taken out the 3 in the second term by accident. Thanks for your help; I understand it now. And sorry for taking up your time with questions.
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