I understand how the (local) error for euler's method of integration is derived from the perspective of the taylor expansion and inequality. However, I don't really see why taylor's equation needs to be invoked, since the euler method can also be derived as a tangent line approximation. How then is the order of the error estimated by interpreting euler's method as a tangent line approximation?(adsbygoogle = window.adsbygoogle || []).push({});

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# Euler's method error

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