| 用点差法巧解中点弦问题 |
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| 引用本文： | 龚漪静.用点差法巧解中点弦问题[J].江西教育学院学报,2011,32(3):8-10. |
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| 作者姓名： | 龚漪静 |
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| 作者单位： | 井冈山大学附中,江西井冈山,343600 |
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| 摘 要： | 点差法在解决与中点有关的问题时确实很有用。它通过“设点”、“作差”两个步骤。就产生了弦的中点和弦所在直线的斜率，巧妙地避免了解方程组求交点的复杂运算，使问题轻松获解。与常规解法相比，其优越性显而易见。
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| 关 键 词： | 点差法 巧解 中点弦 |
Skillful Solutions to Midpoint Chord Problems by Point Difference Method |
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| GONG Yi-jing.Skillful Solutions to Midpoint Chord Problems by Point Difference Method[J].Journal of Jiangxi Institute of Education,2011,32(3):8-10. |
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| Authors: | GONG Yi-jing |
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| Institution: | GONG Yi-jing(High School Attached to Jinggangshan University,Jinggangshan 343009,China) |
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| Abstract: | It is really useful to settle the problems of midpoint by point difference method. It is through setting assumption point and adopting the method of difference that a complicated calculation of seeking the intersection between the chord midpoint and the c |
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| Keywords: | point difference method skillful solutions midpoint chord |
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