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The graph of the approximating polynomial $\"\"$ and the elementary function $\"\"$ both pass through the point $\"\"$ and the slope of the graph of $\"\"$ is the same as the slope of the graph of $\"\"$ at the point $\"\"$ .If $\"\"$ is of degree $\"\"$ , then the first $\"\"$ derivatives of $\"\"$ and $\"\"$ agree at $\"\"$ ,this allows

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