函数逼近与曲线拟合，用最小二乘法进行曲线拟合的C或C++编写的完整程序！

已知x 0 5 10 15 20 25 30 35 40 45 50 55

y 0 1.27 2.16 2.86 3.44 3.87 4.15 4.37 4.51 4.58 4.02 4.64

近似解析表达式为y=at+bt^2+ct^3

求a,b,c

-Function approximation and curve fitting, using the least squares method the curve fitting C or C++ of writing the complete program! Known x 0 5 10 15 20 25 30 35 40 45 50 55 y 0 1.27 2.16 2.86 3.44 3.87 4.15 4.37 4.51 4.58 4.02 4.64 approximate analytical expression for y = at+bt ^ 2+ct ^ 3 seeking a, b, c