打印乘法口诀表，每项的格式为：i * j = k，如： 1 * 1 = 1 1 * 2 = 2 2 * 2 = 4 1 * 3 = 3 2 * 3 = 6 3 * 3 = 9-Print multiplication formulas table format for each of: i* j = k, such as: 1* 1 = 1 1* 2 = 2 2* 2 = 4 1* 3 = 3 2* 3 = 6 3* 3 = 9

优化，无约束最小值，非线性最小二乘法的函数库-Optimization/Unconstrained Minimization/ Nonlinear Least Squares Library in ANSI C