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Rules for differentiation of algebraic combinations (addition, multiplication and division of functions)

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7. b) (fg)' = f'g + fg'

c) (f/g)' = (f'g - fg') / g^2

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Rules for differentiation of algebraic combinations (addition, multiplication and division of functions) are proven. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

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