19M.2.AHL.TZ1.H_6

pestleMathematicsAIHLPaper 219M· ahl-1-13-polar-and-euler-formsource ↗

Let $z = a + b{\text{i}}$ , $a$ , ${\text{b}} \in {\mathbb{R}^ + }$ and let ${\text{arg}}\,z = \theta$ .

Show the points represented by $z$ and $z - 2a$ on the following Argand diagram.

Markscheme / solution

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

Note: Award A1 for $z$ in first quadrant and $z - 2a$ its reflection in the $y$ -axis.

[1 mark]

Examiners’ report

[N/A]