Differential Equations › Section C · Second order differential equations › Topic C.7

More on the Wronskian

The Wronskian does more than certify a fundamental set. It tests whether two functions are linearly independent, and Abel's theorem lets you find it for an equation's solutions without solving the equation at all.

In this topic

  • Two questions about one determinant
  • Linear dependence and independence
  • The Wronskian test
  • Worked example: three pairs
  • A zero Wronskian is not proof
  • Abel's theorem
  • Zero once means zero always
  • Worked example: a Wronskian without solving
  • Common mistakes to avoid
  • Key takeaways

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