• Book	Advanced Engineering Mathematics
  Author	Erwin Kreyszig
  Edition	8th Edition

code_begins

x=var('x')
y=function('y',x)
deq1=diff(y,x)+y-e^-x*tan(x)==0
r=desolve(deq1,[y,x],y)
show(r.simplify_full())

code_ends

• Solution by:

  • shivashankar.v

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