Let y = f(1/x) and f'(x) = x³ what is the value of dy/dx at x= 1/2 ? | cbse class 12 maths

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Let y = f(1/x) and f'(x) = x³ what is the value of dy/dx at x= 1/2 ? | cbse class 12 maths

Let y = f(1/x) and f'(x) = x³ what is the value of dy/dx at x= 1/2 ? | cbse class 12 maths