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同学们学习了二元一次方程组后,若能从题意中挖掘涉及二元一次方程组的隐含条件,构造二元一次方程组去解决数学问题,就能既沟通知识之间的内在联系,同时又提高同学们分析问题和解决问题的能力.一、利用二元一次方程的定义构造例1若方程3x~(2a+b+1)+5y)~(a-2b-1)=0是关于x,y的二元一次方程,则a=____,b=____.解析:含有两个未知数,并且含有未知数的项的次数都是1的整式方程叫作二元
Students learn a binary equation, if you can dig from the title implied conditions involving binary equations, the construction of binary linear equations to solve mathematical problems, we can not only communicate the intrinsic link between knowledge , While improving the students ability to analyze problems and solve problems.First, the definition of the use of a binary equation structure Example 1 If the equation 3x ~ (2a + b + 1) + 5y) ~ (a-2b-1) = 0 Is a binary equation on x, y, then a = ____, b = ____. Parsing: An integer equation that contains two unknowns and contains unknowns for the number of times each is 1 is called a binary