f (3.1) = (3.1) 2 − 2×3.1 + 1 = 4.41. And the Difference Quotient is: f (3.1) − f (3) 0.1 = 4.41 − 4 0.1 = 0.41 0.1 = 4.1. As Δx heads towards 0, the value of the slope heads towards the true slope at x.

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Formula to find Difference Quotient is: $$ f (x) = f (x + h) – f (x) / h $$. To find f (x +