Question

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

Answer 1

its D i

Explanation:

Answer 2

Option D. i is the correct option.

Explanation:

The given expression is in the form of
`i^(20+1)`

expression can be written as
`i^(20).i^(1)` as pwers get added when multiplied.

Now we know
`i^(2)=(-1)` Or
`i=\sqrt({-1})` then we will try to convert the expression in the form of i².

`(i^(2))^(10) .i = (-1)^(10) .i=[(-1)^(2)]^(5).i=1^(5).i=1.i=i`

Therefore option D is the answer.