Ex 13.2, 1 - Find derivative of x2 - 2 at x = 10 - Chapter 13 - Derivatives by 1st principle - At a point

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Ex 12.2, 1 Find the derivative of 𝑥﷮2 ﷯– 2 at 𝑥=10. Let f (x) = 𝑥﷮2 ﷯– 2 f’(x) = 𝑑( 𝑥﷮2﷯ − 2)﷮𝑑𝑥﷯ = 2𝑥 – 0 = 2𝑥 So, f’(𝑥) = 2𝑥 f’(10) = 2 × 10 = 20

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