请教matlab怎样求在给定已知值的各阶导数啊?如y=sin（x）,求x=2时的各阶导数的值?

Question

请教matlab怎样求在给定已知值的各阶导数啊?如 y=sin（x）,求x=2时的各阶导数的值?

Answer 1

clear;
clc;
syms x;
y = sin(x);
y0 = y;
n = input('几阶导数:'); %%%% 确定你要几阶导数
for ii = 1:n
y1 = diff(y0);
y0 = y1;
end
my_y = subs(y0,'x',pi/6) %%%% 带入你要的点的值
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