Hi, I cannot solve your problem, but I'd like to recommend a website that was very helpful for my daughter(click the 'Brightstorm math' link in the related links list). Her math teacher recommended it and she is using it whenever she has a hard time understanding a math concept. It has a lot of math video lessons on various topics from Algebra through Calculus, hopefully including the one you need help with. It is all free with a simple registration. Hope it will help you, too. Good luck with your math study!
http://www.brightstorm.com/d/math/s/calculus/u/techniques-of-differentiation/t/the-product-rule
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product is to multiply and quotient is to divide.!
The product
3 and 9
2
It depends on the sum of 6 and WHAT!