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ZIMSEC A-Level Pure Mathematics

6.7Complex numbers

Complex numbers in ZIMSEC A-Level Pure Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Topic96 practice questions5 lessons

In this topic

Lessons

  • Complex numbers in Cartesian form

    45 min

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  • The Argand diagram, modulus–argument and polar form

    50 min

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  • De Moivre's theorem and nth roots

    45 min

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  • Loci in the Argand diagram

    50 min

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  • Polynomial equations with complex roots

    45 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Complex numbers: sample question

1 mark

What is the principal argument of −1−i-1 - \mathrm{i}?

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