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本文通过举例说明了导数在求函数的切线、不等式证明、函数的极值中的运用以及在实际中的应用。通过实例充分说明了导数在中学数学中所发挥的重要作用。
In this paper, we illustrate the use of derivatives in the tangent of the function, the proof of inequality, the extreme value of the function and its application in practice. The example shows that the derivative plays an important role in high school mathematics.