matlab 如何表示f (x) = (x2 + 1)(x + 1)(x + 2) ？
题目如下：
已知多项式f (x) = (x2 + 1)(x + 1)(x + 2), g(x) = 3x + 2,
求两个多项式的和、差、乘、积、商及f (x)的导数。
希望可以不用自己化简，直接通过软件表示出多项式的标准形式并进行计算
同学你好，这个so easy
syms x f g
f = (x^2+1)*(x+1)*(x+2);
g = 3*x+2;
he = f+g
cha = f-g
cheng = f*g
ji = f*g
shang = f/g
daoshu = diff(f,x)
结果
he =
3*x + (x^2 + 1)*(x + 1)*(x + 2) + 2
cha =
(x^2 + 1)*(x + 1)*(x + 2) - 3*x - 2
cheng =
(3*x + 2)*(x^2 + 1)*(x + 1)*(x + 2)
ji =
(3*x + 2)*(x^2 + 1)*(x + 1)*(x + 2)
shang =
((x^2 + 1)*(x + 1)*(x + 2))/(3*x + 2)
daoshu =
(x^2 + 1)*(x + 1) + (x^2 + 1)*(x + 2) + 2*x*(x + 1)*(x + 2)