Question

-) Differentiate from first principles: \text { (i) } 4 x^{2}-x \text { (ii) }(x-1)|x| \text {. } (b) Stating and using appropriate rules, find y'(x) where: \text { (i) } y(x)=3 e^{2 x} \cos (x) \text { (ii) } y(x)=\sinh \left(x^{2}-3 x\right) \text {, }

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