\[x^2 - x + 1 = 4x ,\]
\[x^2 + x + 1 = 6x \]
两式相乘
\[ x^4 + x^2 + 1 = 24x^2\]
所以\[ \frac{x^2}{x^4 +1} =\frac{1}{23}。\]
\[x^2 + x + 1 = 6x \]
两式相乘
\[ x^4 + x^2 + 1 = 24x^2\]
所以\[ \frac{x^2}{x^4 +1} =\frac{1}{23}。\]
锟斤拷锟洁辑时锟斤拷: 2022-06-06 04:03:31
鎵�璺熷笘: 脠眉脌楼 : 碌脷露镁脢脟脝陆脨脨脣脛卤脽脨脦拢驴 2022-06-05 23:54:58
碌脷脪禄脤芒2022-06-06 03:48:31 [鐐瑰嚮:1219]
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