Third-order approximation: $E = m_0c^2 + \tfrac12m_0v^2\big(1 + \tfrac{3v^2}{4c^2}\big) + O(v^6)$

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Third-order approximation: $E = m_0c^2 + \tfrac12m_0v^2\big(1 + \tfrac{3v^2}{4c^2}\big) + O(v^6)$ · Prove2Me