NCERT Exercise 12.2 Q4 - Limits and Derivatives

Question: From first principles find derivatives of: (i) x^3-27, (ii) (x-1)(x-2), (iii) 1/x^2, (iv) (x+1)/(x-1).

Answer: (i) 3x^2; (ii) 2x-3; (iii) -2/x^3; (iv) -2/(x-1)^2.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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