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annas

  • 3 years ago

Solve the differential equation y″ – y′ – 2 y = 0 ? (show the method to solve differential eq with constant coefficient)

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  1. annas
    • 3 years ago
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    i guess we'll use substitution here ?

  2. wasiqss
    • 3 years ago
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    lool easly :)

  3. annas
    • 3 years ago
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    i forgot the method but i have done it by substitute y = e mx

  4. annas
    • 3 years ago
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    thanks wasiqss

  5. wasiqss
    • 3 years ago
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    we have to take out complimentary and particular solution right

  6. annas
    • 3 years ago
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    yes

  7. myko
    • 3 years ago
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    y'=lambda so: \[\lambda ^{2} - \lambda -2=0\] solving : lambda = 2 and -1 solution: \[y=C _{1}e ^{2t}+C _{2}e ^{-t}\]

  8. wasiqss
    • 3 years ago
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    first take out factors of this equation

  9. wasiqss
    • 3 years ago
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    right myko

  10. annas
    • 3 years ago
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    one more thing how to write the solution when discriminant is zero , positive & negative

  11. wasiqss
    • 3 years ago
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    in terms of 0, like we have two roots of lamba =2, then answer will be c1e^2+c2xe^2

  12. annas
    • 3 years ago
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    ok

  13. wasiqss
    • 3 years ago
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    for negative iota aaajate hain

  14. wasiqss
    • 3 years ago
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    like in terms of sin and cos chale jaata hai

  15. annas
    • 3 years ago
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    ok wasiq

  16. annas
    • 3 years ago
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    thank you myko and wasiqss :)

  17. wasiqss
    • 3 years ago
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    np khocha ;)

  18. annas
    • 3 years ago
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    khocha tumhari math achi ha :P

  19. wasiqss
    • 3 years ago
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    haha mujhe pata hai :D teri aapi ne kafi madad ki hai :)

  20. annas
    • 3 years ago
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    nice lana is also awesome at maths

  21. wasiqss
    • 3 years ago
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    yeh she is :)

  22. annas
    • 3 years ago
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    or khocha tum chay pia gi?

  23. wasiqss
    • 3 years ago
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    lol elaichi wala :)

  24. annas
    • 3 years ago
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    hum tum ko badam wala chay peli ga

  25. annas
    • 3 years ago
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    :P

  26. wasiqss
    • 3 years ago
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    aala aala khocha khush hua , ab khocha ko medal toh dai :D

  27. annas
    • 3 years ago
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    oh abhi dati ha tum ko medal :P

  28. wasiqss
    • 3 years ago
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    aala aalah :D

  29. annas
    • 3 years ago
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    wallah ya tumhari medal :P

  30. annas
    • 3 years ago
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    chlo khocha hum tum ko programming seekhati ha

  31. wasiqss
    • 3 years ago
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    seekha seekha wallah :)

  32. annas
    • 3 years ago
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    <?php echo 'i <3 khocha :P'; ?> output: i <3 khocha :P

  33. wasiqss
    • 3 years ago
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    khoocha ka dil garden gardn hogaya :D

  34. annas
    • 3 years ago
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    lol wallah coding faluda ha

  35. annas
    • 3 years ago
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    chlo khocha hum chalti ha :P

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