论文部分内容阅读
在解数学题中,我们总希望减少计算量,这样既可以提高解题速度.又可以避免解题过程中因复杂的运算而造成的错误.笔者结合教学中的所见谈谈减少计算量的几种途径.一巧妙地应用定义例1 方程 ax~2+bx+c=0(a≠0)的两
In solving mathematics problems, we always hope to reduce the amount of calculations. This will not only increase the speed of problem solving, but also avoid the mistakes caused by complex calculations in the process of solving problems. The author has reduced the amount of calculations in combination with what is seen in teaching. Several approaches. A clever application of the definition of the two equations ax~2+bx+c=0 (a ≠ 0)