函数y=f(x)在点P处的导数的几何意义就是曲线y=f(x)在点P(x_0,y_0)处的切线的斜率,导数的几何意义把函数的导数与曲线的切线联系在一起,使导数成为函数知识与解析几何知识交汇的一个重要载体.下面举例说明导数几何意义的几种应 The geometric meaning of the derivative of the function y = f (x) at point P is the slope of the tangent at curve y = f (x) at point P (x_0, y_0). The geometrical meanings of the derivatives relate the derivative of the function to the tangent of the curve So that the derivative becomes an important carrier of the intersection of the functional knowledge and the analytic geometry knowledge.The following examples illustrate how the geometric meanings of derivatives should be