Key in the power of i

Exercise and reference answers

Questions

1. Answer

   -1

   Question

   What is i squared?

2. Answer

   1

   Question

   What is i to the power 4?

3. Answer

   5

   Question

   For the complex number 3 + 4i, what is its modulus?

4. Answer

   7

   Question

   For the complex number 7 - 2i, what is the real part?

Instructions

Work out each answer and key it in on the pad.

Explanation