Question

What is the value of i^20+1?
A. 1
B. –1
C. –i
D. i

Answer 1

Answer: its d

Step-by-step explanation: just took the test on edge

Answer 2

`{i}^(20) + 1 =2`

Step-by-step explanation

The given expression is;

`{i}^(20) + 1`

Recall that, in complex numbers

`{i}^(2) = - 1`

We use this identity to simplify the given expression:

`{i}^(20) + 1 =( {i}^(2))^(10) + 1`

This implies that:

`{i}^(20) + 1 =( - 1)^(10) + 1`

`{i}^(20) + 1 =1+ 1`

`{i}^(20) + 1 =2`