一道关于相似的数学几何题已知△ABC中,D为AB边的中点,G为CD的中点,过点G的直线分别交AC、BC于点P、Q,设CP/CA=m,CQ/CB=n,求1/m+1/n的值
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![一道关于相似的数学几何题已知△ABC中,D为AB边的中点,G为CD的中点,过点G的直线分别交AC、BC于点P、Q,设CP/CA=m,CQ/CB=n,求1/m+1/n的值](/uploads/image/z/12625282-10-2.jpg?t=%E4%B8%80%E9%81%93%E5%85%B3%E4%BA%8E%E7%9B%B8%E4%BC%BC%E7%9A%84%E6%95%B0%E5%AD%A6%E5%87%A0%E4%BD%95%E9%A2%98%E5%B7%B2%E7%9F%A5%E2%96%B3ABC%E4%B8%AD%2CD%E4%B8%BAAB%E8%BE%B9%E7%9A%84%E4%B8%AD%E7%82%B9%2CG%E4%B8%BACD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%BF%87%E7%82%B9G%E7%9A%84%E7%9B%B4%E7%BA%BF%E5%88%86%E5%88%AB%E4%BA%A4AC%E3%80%81BC%E4%BA%8E%E7%82%B9P%E3%80%81Q%2C%E8%AE%BECP%2FCA%3Dm%2CCQ%2FCB%3Dn%2C%E6%B1%821%2Fm%2B1%2Fn%E7%9A%84%E5%80%BC)
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