ex3507.m

来自「数字信号处理的MATLAB实现」· M 代码 · 共 8 行

%例35-7 
syms x y
z=3*x^3*y^2+sin(x*y);
dzx=diff(z,x);
dzxy=diff(dzx,y);
dzxy
pretty(diff(dzx,y))