#Differentiation Past Paper Question Edexcel A Level

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snow jewel
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idk where i fucked it

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Wait im gonna have another go i think if i re-arrange the original equation in the form y = ..........

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then use the quotient rule to differentiate and then plug in my values i can get the answer

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nvm i think im just an idiot

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im looking at mark scheme

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i didnt know you could have values on both sides of an equation and you are still able to differentiate it

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nah someone explain how d/dx(2xy) = 2y + 2x (dy/dx)

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i swear its just 2y