Differences between revisions 4 and 8 (spanning 4 versions)
⇤ ← Revision 4 as of 2010-08-09 14:06:24 →
Size: 455
Editor: PraveenKumar
Comment: I changed the problem from first order to a second order differential equation.
← Revision 8 as of 2010-08-11 10:58:16 → ⇥
Size: 609
Editor: SWATI AHUJA
Comment:
Deletions are marked like this. Additions are marked like this.
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#prob:- 7 #unsolved
#prob:-7
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# This was a first order differential equation. I made it a second order differential eqn. Sage prompted us "Is k positive,negative or zero"
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   * Aashita Kesarwani, Student, IIT Roorkee    * Aashita Kesarwani, Student, IIT Roorkee.

  • Book

    Advanced Engineering Mathematics

    Author

    Erwin Kreyszig

    Edition

    8th Edition 

#unsolved
#prob:-7
x = var('x') 
k = var('k') 
y = function('y',x)
sol=desolve(diff(y,x,x) + k*y - exp(-k*x), [y,x])
sol
# This was a first order differential equation. I made it a second order differential eqn. Sage prompted  us "Is k positive,negative or zero"

  • Solution by:

    • Aashita Kesarwani, Student, IIT Roorkee.
    • Praveen Kumar, Student, IIT Roorkee
    • Swati Ahuja,Student,IIT Roorkee

SageDays/Kreyszig-1.6-7 (last edited 2010-08-11 11:02:20 by Aashita)