Finally,the controlling variable B(the value-range of parameter c0)are made certain,therefore the number of iteration is reduced and the computing efficiency of the algorithm is improved too.

• 然后；对迭代函数f(z)=zm+c进行了详细研究；从而合理地确定了算法中需要控制的变量B(参数值c0的取值范围)的取值；这样就大大地减少了迭代次数；从而提高了算法的运算效率.