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解数学题时,把某个式子看成一个整体,用一个变量去代替它,从而使问题得到简化,这种方法就是换元法.换元法在导数中有很好的运用,很多复杂的导数问题需要用到换元法.本文就换元法在导数中的应用作一些探讨.1通过换元把多变量问题转化为单变量问题有些导数问题含有多个变量,在构成函数时需要将多个变量合成一个变量,从而将多元函数(方程)转化为一元函数(方程)求解.
Solving mathematical problems, the formula as a whole, as a variable to replace it, so that the problem is simplified, this method is the metamorphosis method. The metamorphosis method in the derivative of a good use, a lot of complex The derivative problem requires the use of the metamorphosis method.In this paper, we discuss the application of the metamorphosis method in the derivation.1 Transforming the multivariable problem into the univariate problem by using the metamorphosis Some derivatives problems contain multiple variables that are required to form a function Combining multiple variables into one variable translates a multivariate function (equation) into a one-piece function (equation).