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Differential Equations 2 Mark Book Back Question Paper With Answer Key

12th Standard

    Reg.No. :
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Business Maths

Time : 00:30:00 Hrs
Total Marks : 56

    2 Marks 

    28 x 2 = 56
  1. Find the order and degree of the following differential equations.
    \(\frac { dy }{ dx } +2y={ x }^{ 3 }\)

  2. Find the differential equation of the following
    y = cx + c − c3

  3. Find the order and degree of the following differential equations
    \(\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } } +3{ \left( \frac { dy }{ dx } \right) }^{ 2 }+4y=0\)

  4. Solve: (x+ x + 1)dx + (y2− y + 3)dy = 0

  5. Solve: ydx − xdy = 0

  6. Solve (D2−3D−4)y = 0

  7. Solve 9y'' − 12y' + 4y = 0

  8. Solve \(\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } } -4\frac { dy }{ dx } +5y\) = 0

  9. Solve the following differential equations
    \(\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } } -6\frac { dy }{ dx } +8y=0\)

  10. Solve the following differential equations
    \(\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } } -4\frac { dy }{ dx } +4y=0\)

  11. Solve the following differential equations
    (D2+2D+3)y = 0

  12. Solve the following differential equations
    \(\frac{d^2 y}{dx^2}-2k\frac{dy}{dx}+k^2y = 0\)

  13. Solve the following differential equations: \(\frac { { d }^{ 2 }y }{ { dx }^{ 2 } } +16y=0\)

  14. Find the order and degree of the following differential equations.
    \(\frac{d^{3} y}{d x^{3}}+3\left(\frac{d y}{d x}\right)^{3}+2 \frac{d y}{d x}=0\)

  15. Find the order and degree of the following differential equations.
    \(\frac { d^{ 2 }y }{ { dx }^{ 2 } } =\sqrt { y-\frac { dy }{ dx } } \)

  16. Find the order and degree of the following differential equations.
    \(\frac { { d }^{ 3 }y }{ d{ x }^{ 3 } } =0\)

  17. Find the order and degree of the following differential equations.
    \(\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } } +y+{ \left( \frac { dy }{ dx } -\frac { { d }^{ 3 }y }{ dx^{ 3 } } \right) }^{ { 3 }/{ 2 } }=0\)

  18. Find the order and degree of the following differential equations.
    (2 - y'')2 = y''2 + 2y'

  19. Find the order and degree of the following differential equations.
    \({ \left( \frac { dy }{ dx } \right) }^{ 3 }+y=x-\frac { dx }{ dy } \)

  20. Find the differential equation of the following
    xy = c2

  21. Find the differential equation of the following
    x2 + y2 = a2

  22. Solve: \(\frac { dy }{ dx } \) + ex+ye= 0

  23. Find the order and degree of the following differential equation
    \(\frac { { d }^{ 2 }y }{ { dx }^{ 2 } } -2\frac { dy }{ dx } +3y=0\)

  24. Find the order and degree of the following differential equation
    \(\frac { { d }^{ 2 }y }{ { dx }^{ 3 } } -3{ \left( \frac { dy }{ dx } \right) }^{ 6 }+2y={ x }^{ 2 }\)

  25. Find the order and degree of the following differential equation
    \({ \left[ 1+\frac { { d }^{ 2 }y }{ { dx }^{ 2 } } \right] }^{ \frac { 3 }{ 2 } }=a\frac { { d }^{ 2 }y }{ d{ x }^{ 2 } }\)

  26. Find the order and degree of the following differential equation
     y' + (y'')2 = (x + y'')2

  27. Find the order and degree of the following differential equation
    \(\frac { { d }^{ 3 }y }{ { dx }^{ 3 } } -{ \left( \frac { dy }{ dx } \right) }^{ \frac { 1 }{ 2 } }=0\)

  28. Find the order and degree of the following differential equation
    \(y=2{ \left( \frac { dy }{ dx } \right) }^{ 2 }\)+ 4x\(\frac { dx }{ dy } \)

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