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求弦长,在解析几何中是经常遇到的问题.所以能够熟练地掌握求弦长的方法,非常必要.如果能熟练地掌握巧法求弦长更为心要. 求弦长的一般方法是把圆锥曲线方程与直线方程组成方程组,求交点坐标,然后再运用两点间距离公式,求弦长.一般方法求
Finding the length of the chord is a problem often encountered in analytical geometry. Therefore, it is necessary to be able to master the method of finding the chord length. It is necessary if you can skillfully grasp the clever method and seek the chord length. The general method for finding the chord length is necessary. Concave curve equations and linear equations form a system of equations, find the coordinates of the point of intersection, and then use the distance formula between two points to find the length of the string.