A-LevelMathematicsComplex numbers9709/31 · Oct/Nov 2024 · Q89 Marks
On a single Argand diagram, sketch the loci given by the equations Re(z) = 1 and |z - ½| = ½, where z is a complex number.
- (c)On a single Argand diagram, sketch the loci given by the equations Re(z) = 1 and |z - ½| = ½, where z is a complex number.[3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.
- [B1] Show a vertical straight line through 1+0i Im(z)
- [B1] Show a circle centre ½+0i
- [B1] Show a circle with radius ½ and centre not at the origin
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