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最近笔者在研究圆锥曲线时,发现文[1]给出了第1628号数学问题为:直线l:x/m+y/n=1与椭圆
Recently when I studied the conic curve, I found the text [1] gives the mathematical problem No. 1628 as follows: the straight line l: x / m + y / n = 1 and the ellipse