论文部分内容阅读
拉格朗日证明了在每一点都有切线的连续曲线y=f(x)上,任意一个弦的两端点之间至少能找到曲线上一点,在这点曲线的切线与弦平行(如
Lagrange proves that at every point there is a tangent continuous curve y = f (x), at least one point on the curve can be found between the two ends of any one of the strings, at which point the tangent to the curve is parallel to the chord