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back to our original limit equation to see how we can achieve this result algebraically: Let’s try to find the derivative, where f(x)=x², but this time, let’s let x₁ represent an arbitrary point on the graph of f(x). If f(x)=x², then f(x₁+Δx)= (x₁+Δx)² while f(x₁)=(x₁)² We can rewrite this equation