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Answers for “在 x=a 处取 n 阶导数时,泰勒级数中的其他项会发生什么?”

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All other terms in the Taylor series evaluate to zero. Terms with powers of (x-a) less than n vanish completely because differentiating a lower-degree polynomial n times results in zero.

Conditions: The function is infinitely differentiable at a.; n is a non-negative integer.; The derivative is evaluated exactly at the center point x=ax=a.

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The core intuition is that Taylor polynomials approximate differentiable functions by ensuring that their derivatives match the target function's derivatives at a specific center point. This is achieved by adding together polynomials where the nth-order term has the same nth derivative as the function at that point.

Conditions: The function being approximated must be differentiable at the chosen point.; The approximation is constructed as a sum of individual polynomial terms.