The derivative $f'(x)$ at a point $x$ represents the slope of the tangent line to the graph of $f(x)$ at that point.
Let's examine the graph to estimate the slope at $x=1, 2, 3, 4, 5$.
Step 2: Estimate $f'(1)$
At $x=1$, the graph is increasing steeply. We need
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