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导数与函数的图像问题对函数求导,可以确定函数的单调性、极值和最值,从而确定其图像的特征.例1函数y=x/2-2sinx的图像大致是
Derivative and function of the image problem Derivation of the function can determine the monotonicity of the function, the extreme value and the maximum value to determine the characteristics of its image.Example 1 Function y = x / 2-2sinx the image is roughly