Specialist2024 Exam 2 Section A · Q6CAS active1 mark

Value of k making a complex expression purely imaginary

Let $z = 3 + ki$ where $k \in R$ .

A value of $k$ that makes $z^2 + 4iz + 3$ purely imaginary is

1 mark

-2

-1

1

2

Hints, answer checking and worked solutions come with a Season Pass.

Specialist2024 Exam 2 Section A · Q6CAS active1 mark

Let $z = 3 + ki$ where $k \in R$ .

A value of $k$ that makes $z^2 + 4iz + 3$ purely imaginary is

1 mark

-2

-1

1

2

Hints, answer checking and worked solutions come with a Season Pass.