【摘要】 研究了行列式在解析几何中的一些应用。在已知3个点的坐标时,利用行列式简洁、对称、优美地表示以三点为顶点的三角形的面积、三点共线的条件和两点式的直线方程及三线共点的条件。更多还原

【Abstract】 Some applications of determinant in analytic geometry were studied.Using determinant we obtain concisely,symmetrically and delicately the triangle area,the conditions of three points in a line and three lines through a point,and a beeline equation of through two points.更多还原