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differentation question (a) Find of the following functions: dx (i) 4In(x y) = 9. [4 marks] (ii) V3xty = n. [4 marks] (iii) (y+7)' =

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differentation question

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(a) Find of the following functions: dx (i) 4In(x y) = 9. [4 marks] (ii) V3xty = n. [4 marks] (iii) (y+7)' = 2 tan' (3xy). [7 marks] ex vx'+ x (b) Given y = find cos ( 2x* + 7) using the logarithmic differentiation. dx [10 marks]

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