一个SAT2的数学概念：If the largest exponent is an even number,both e

一个SAT2的数学概念：
If the largest exponent is an even number,both ends of the graph leave the coordinate system either at the top or at the bottom.
If the largest exponent is an odd number,the ends of the graph leave the coordinate system at opposite ends.
这两个都是关于高次多项式函数的概念,