Question

■) Find the derivative of the following expressions. \text { i. } \quad f(x)=\left(5 x^{7}-5 x^{5}\right)\left(3 x^{4}-2\right) y=\frac{4 x^{7}-2 x^{3}}{\left(x+6 x^{4}\right)} y=(\sin 2 x)\left(-6 x^{2}+7 x\right)^{3}

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