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

ANSWER

${i}^{20} + 1 =2$

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:

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

${i}^{20} + 1 =1+ 1$

${i}^{20} + 1 =2$