Introduction to Differential Equations

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Questions and Answers

Which of the following is an example of a 2nd order non-homogeneous ODE?

  • 4x dy/dx + 2y = sin(x)
  • dy/dx + sin(y) = x
  • x^2y''' + 10y' = 1/(x^2 + 1) (correct)
  • arctan(x) d^2y/dx^2 + ex dy/dx = 0

What is the definition of a solution of an nth order ODE?

  • A function (x) that satisfies F(x, y, y', y'',.,y^(n-1)) = 0
  • A function (x) that satisfies F(x, y, y', y'',.,y^(n)) = 0
  • A function (x) that satisfies F(x, (x), 0, 0,., (n-1)) = 0
  • A function (x) that satisfies F(x, (x), 0, 0,., (n)) = 0 (correct)

What is a general solution of an ODE?

  • A solution obtained by giving values to n arbitrary constants
  • A solution containing n arbitrary constants (correct)
  • A solution without any arbitrary constants
  • A solution satisfying all initial conditions

Which statement best describes an initial value problem (IVP)?

<p>An ODE along with an appropriate number of initial conditions (A)</p> Signup and view all the answers

Which function is a solution of the differential equation dy/dx = y?

<p>(x) = ex (C)</p> Signup and view all the answers

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