Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2010-08-11 13:56:02 →
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Editor: Abhi-akash
Comment:
← Revision 3 as of 2010-08-11 14:16:08 → ⇥
Size: 617
Editor: hardikgajera
Comment:
Deletions are marked like this. Additions are marked like this.
Line 8: Line 8:
OBSOLETE
var('x,y')
y=function('y',x)
desolve(diff(y,x,2)*x*x*4 + 8*x*diff(y,x) - 3*y == 7*x*x - 15*x*x*x, dvar = y)		 t=var('t')
Y=function('Y',t)
DE = diff(diff(Y,t),t) + 25*Y - 24*sin(t)
de(t)=desolve (DE,[Y,t])
print de(t)
de1(t)=diff(de(t),t)
k1,k2=var('k1,k2')
solve([de(0)==1,
       de1(0)==1],k1,k2)
de(t)=de(t).subs(k1 =0, k2= 1)
print 'The motion of the given mass-spring system is'
print(de(t))
plot(de(t),[0,20])
Line 18: Line 27:
   * Akash Singh, Student, CRCE    * Hardik Gajera, student, IISER Pune
   * Lokesh Pimpale, student, IISER Pune

  • Book

    Advanced Engineering Mathematics

    Author

    Erwin Kreyszig

    Edition

    8th Edition 

t=var('t')
Y=function('Y',t)
DE = diff(diff(Y,t),t) + 25*Y - 24*sin(t) 
de(t)=desolve (DE,[Y,t])
print de(t)
de1(t)=diff(de(t),t)
k1,k2=var('k1,k2')
solve([de(0)==1,    
       de1(0)==1],k1,k2)
de(t)=de(t).subs(k1 =0, k2= 1)
print 'The motion of the given mass-spring system is' 
print(de(t))
plot(de(t),[0,20])

  • Solution by:

    • Hardik Gajera, student, IISER Pune
    • Lokesh Pimpale, student, IISER Pune

SageDays/Kreyszig-2.11-13 (last edited 2010-08-11 14:16:08 by hardikgajera)