Locating Roots
Mathematics · Year 13 · Numerical Methods · 3o Periodo

Locating Roots

Use a change of sign to locate a root of a function within a given interval.

National Curriculum Attainment TargetsDfE A level mathematics subject content Year 13: Numerical methods;Locate roots of f(x) = 0 by considering changes of sign of f(x) in an interval of x.

About This Topic

Use a change of sign to locate a root of a function within a given interval.

Key Questions

  1. Why does a change of sign indicate the presence of a root?
  2. Under what conditions might a change of sign fail to locate a root?
  3. How can we use a graph to verify the existence of a root?

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