学习了二次根式之后,我们会经常在二次根式的化简与计算中,遇到需要确定一个实数的整数部分与小数部分问题,这类问题由于是与二次根式有关,从而让不少同学感到有一定的难度,事实上,在确定一个实数的整数部分与小数部分,首先应判断已知实数的取值范围,再确定其整数部分和小数部分.具体方法是:由于任意一个实数的小数部分一定要为正数,所以正、负实数的整数部分与小数部分确定方法:一是对于正实数,整数部分可直接取与其最接近的两个整数中最小的正整 After learning the quadratic root, we often encounter the problem of determining the integer part and fractional part of a real number in the quadratic root simplification and calculation. Since these problems are related to the quadratic root, so many Students feel a certain degree of difficulty, in fact, in determining a real integer part and fractional part, we must first determine the range of known real numbers, and then determine the integer part and fractional part of the specific method is: Because of any real number The fractional part must be a positive number, so positive and negative real integer part and fractional part of the determination method: First, for positive real number, the integer part can be taken directly to the nearest integer two of the smallest positive integer