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[不等式] 三角形中的不等式

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lemondian posted 2020-9-21 08:17 |Read mode
在$\triangle ABC$中,求证:
(1)$(\dfrac{m_a}{w_a})^2+\dfrac{b^2+c^2}{2bc}\leqslant 1+(\dfrac{R}{2r})^2$;
(2)$(\dfrac{w_a}{h_a})^2+\dfrac{b^2+c^2}{2bc}\leqslant 1+(\dfrac{R}{2r})^2$;

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