Quick questions on Complex numbers: Argand diagrams, modulus-argument form and de Moivre - Edexcel A-Level Further Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

Show answer

Express

z = 1 + i

in modulus-argument form. [3 marks]

What is q2?

Show answer

Given that

3 - 2i

is a root of

x^2 + bx + c = 0

with real

b

and

c

, find

b

and

c

. [3 marks]

What is q3?

Show answer

Find the four fourth roots of

-16

, giving them in the form

re^{i\theta}

. [5 marks]

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All Further MathsQ&A pages