x=var('x')
w=var('w')
W=det(matrix([[x**4,x**4*log(x)],[4*x**3,(x**3+4*x**3*log(x))]]))        
show(W.simplify_rational())
#W=0 for x=0, so the basis functions are linearly dependent

SageDays/Kreyszig-2.7-1 (last edited 2010-08-12 07:21:38 by namdev more)