用二分法求方程2x*x*x-4x*x+3*x-6=0在（-10,10）之间的根（C程序设计——谭浩强第六章习题）-With the dichotomy of equation 2x* x* x-4x* x+3* x-6 = 0 in (-10,10) between the root (C programming- Transplantation and Hemopurification Chapter Exercises)