利用克拉姆法则求解线性方程组，例子为四阶-solving linear equations with cramer rules

自己用boost类库写的实例程序，有解线性方程组的实例，对你全面理解boost类库很有帮助，入门必备-With the boost library to write their own examples of procedures, a solution to an instance of linear equations, you fully understand the boost library very helpful entry necessary