IB Diploma · Mathematics Aa

Complex numbers

6 practice questions, each with the answer and an explanation.

Practise Complex numbers now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 6 questions

  1. Let . What is the smallest positive integer for which is purely imaginary with a positive imaginary part?
  2. The complex number satisfies and . What is ?
  3. What is the modulus of the complex number ?
  4. What is the modulus of the complex number ?
  5. What is the modulus of the complex number ?
  6. What is the modulus of the complex number ?

Keep practising

More IB Diploma topics

All IB Diploma practice →

Complex numbers in other exams

Ready for the full IB Diploma test?

Take a mock testIB Diploma hub