在根式的化简与计算中,常常出现确定一个实数的整数部分与小数部分的问题.确定一个实数的整数部分与小数部分时,应先判断已知实数的取值范围,再确定其整数部分,然后再确定小数部分.由于实数的小数部分一定为正数,所以正、负实数的整数部分与小数部分的确定存在形式上的区别.(1)对于正实数,整数部分直接取与其最接近的两个整数中最小的正整数(或0),小数部分=原数- In the root simplification and calculation, often appear to determine a real integer part and fractional part of the problem.Determine a real integer part and fractional part, you should first determine the range of known real numbers, and then determine the integer part , And then determine the fractional part of the real part of the fractional part must be positive, so positive and negative real integer part and fractional part of the determination of the existence of a formal difference. (1) For positive real numbers, the integer part directly take its closest The smallest positive integer (or 0) between the two integers, the fractional part = prime number -