ex3511.m

数字信号处理的MATLAB实现

%例35-11
syms x y z
f=x^2+2*y^2+z^2;
s=jacobian(f) 
sx=subs(s,'x','-1');
sy=subs(sx,'y','1');
sz=subs(sy,'z','2');
g=vpa(sz)