Hi all,
I have :
define(bx(xn,t),sum(sum(bk[n,m]*bb(n,m,chnod(xn),t),n,1,np),m,1,NT))$
here xn is variable on radius and t - on latitude, chnod transforms from
[-1,1] to custom interval, bk[n,m] are components of eigen vector,
and bb(n,m,chnod(xn),t) are basis functions constructed from Chebyshev and
Legendre polynomials.
I want to see the time evolution patern for eigen solution for a particular
level of convection zone:
F(th,ti):=realpart(expand(bx(.92,cos(th))*exp(%i*ti)));
Note, that
(%i202) F(%pi/4,%pi/4);
Evaluation took 0.01 seconds (0.01 elapsed) using 336.305 KB.
(%o202) [.1803733328091562]
However,
(%i214) contour_plot(F(x,y),[x,0,%pi],[y,0,3*%pi]);
2
Is 1.0 - 1.0 cos (x) positive or negative?
;
Incorrect syntax: Premature termination of input at ;.
What can be a problem here?
best regards
V