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True or false: the complementary function alone satisfies the forced equation.

  • A.True, the particular integral being an optional refinement
  • B.True, provided the initial conditions are homogeneous
  • C.True, whenever the forcing term is bounded
  • D.False, it satisfies only the equation with the right-hand side set to zero

Answer: D

The complementary function is by construction a solution of the homogeneous equation, so substituting it returns zero rather than the forcing term. The particular integral is what supplies that term, and the sum is what satisfies the full equation; neither part is optional

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