問題詳情
11. 設F F2為橢圓 
的焦點， P (x0 ,y0 )(其中 x0>0且y0>0 橢圓Γ上的一點，設I為△PF1 F 2的內心，且直線 
交x軸於D點。若D的坐標為(
)，則x0=___________
的焦點， P (x0 ,y0 )(其中 x0>0且y0>0 橢圓Γ上的一點，設I為△PF1 F 2的內心，且直線 交x軸於D點。若D的坐標為()，則x0=___________
參考答案
答案：A
難度：非常簡單0.926407
統計：A(1712),B(41),C(7),D(88),E(0) #
個人：尚未作答書單：社會計量法(1)、社會計量法(2)
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