可导函数y=f(x)在x0处的导数表示函数y=f(x)在x=x0处的瞬时变化率,它不同于平均变化率,反映的是函数y随x的不均匀变化率,更客观地反映了自然界中的事物变化规律-不均匀性,所以在解决实际问题中发挥着巨大的作用。f(x0)的几何意义表示函数y=f(x)在处的切线的斜率,还可以用导数来 The derivative of the derivative function y = f (x) at x0 represents the instantaneous change rate of the function y = f (x) at x = x0, which is different from the average change rate and reflects the non-uniform change of function y with x Rate, more objectively reflects the changing nature of things in nature - uneven, so in solving practical problems play a huge role. The geometric meaning of f (x0) represents the slope of the tangent at which the function y = f (x) is and can also be derived using derivatives