ex4_7.m

源代码集合

t=['\partial(f_ip)/\partialt=-\Sigma_{i=1}^n\partial(f_ip)/\partialx_i',...
   ' + 0.5\Sigma_{i=1}^n\Sigma_{j=1}^n\partial^2(b_{ij}p)/',...
   '\partialx_i\partialx_j'];
gtext(t);
gtext('Y(\omega)=\int_0^\infty y(t)e^{-j\omegat}dt');

t=['\partial(f_ip)/\partialt=-\Sigma_{i=1}^n\partial(f_ip)/\partialx_i',...
   ' + 0.5\Sigma_{i=1}^n\Sigma_{j=1}^n\partial^2(b_{ij}p)/',...
   '\partialx_i\partialx_j'];
tt=str2mat(t,'Y(\omega)=\int_0^\infty y(t)e^{-j\omegat}dt');
[x,y]=ginput(1); text(x,y,tt);