Differences between revisions 1 and 2
⇤ ← Revision 1 as of 2010-08-09 14:30:06 →
Size: 545
Editor: lokeshpimpale
Comment:
← Revision 2 as of 2010-08-10 12:37:29 → ⇥
Size: 567
Editor: hardikgajera
Comment:
Deletions are marked like this. Additions are marked like this.
Line 19: Line 19:
print I.subs(k1=30, k2=-10) print I.subs(k1 = (-1377/1261), k2 = (2686/1261))

  • Book

    Advanced Engineering Mathematics

    Author

    Erwin Kreyszig

    Edition

    8th Edition 

t=var('t')
I=function('I',t)
DE = 5*diff(diff(I,t),t) + 20*diff(I,t) + 100*I - 425*40*cos(40*t)
I(t)=desolve (DE,[I,t])
I(0)==0
de(t)=diff(I,t)
de(0)==0
k1,k2=var('k1,k2')
solve([I(0)==0,
       de(0)==0],k1,k2)

print I.subs(k1 = (-1377/1261), k2 = (2686/1261))

  • Solution by:

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

SageDays/Kreyszig-2.12-8 (last edited 2010-08-10 13:03:29 by hardikgajera)