1. 开方：Math.sqrt(x); 2. x的a方：Math.pow(x,a); 3. 绝对值：Math.abs(x)； 编程4. BigInteger：大数（加，减，乘，除，取余）
I am just starting with perl and would like some help with arrays please. I am reading lines from a data file and splitting the line into fields:
加载中,请稍侯......