x=var('x')
y=function('y',x)
deq1=diff(y,x)-y*tan(x)==0
r=desolve(deq1,[y,x],ics=(pi,2))
show(r.simplify_full())

Kreyszig-1.6-18-U (last edited 2010-12-17 10:29:19 by mlec)