x=var('x')
a=var('a')
W=det(matrix([[exp((-a/2)*x)*cos(3*x),exp((-a/2)*x)*sin(3*x)],[(-a/2)*exp((-a/2)*x)*cos(3*x)-3*exp((-a/2)*x)*sin(3*x),-a/2*exp((-a/2)*x)*sin(3*x)+3*exp((-a/2)*x)*cos(3*x)]]))        
show(W.full_simplify())

SageDays/Kreyszig-2.7-3 (last edited 2010-08-12 07:25:38 by namdev more)