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三、转化思想转化是将一种研究对象在一定条件下转化为另一种研究对象的数学思想. 通常把实际问题转化为数学问题;把未知转化为已知;把减法、除法转化为加法、乘法;把三元一次方程组转化为二元—次方程组再转化为一元一次方程等.
Third, the transformation of ideas of transformation is a mathematical idea that transforms a subject under certain conditions into another object of study. Usually translates practical problems into mathematical problems; converts unknowns into known ones; translates subtraction and division into addition, Multiplicity; convert a ternary system of first order equations into a binary-order system of equations and then convert it into a unitary equation.