Evaluate:
(i) i19
(ii) i62
(ii) i373.
We all know that i = √(-1) .
and = 1
= i (where n is any positive integer )
=
= -1
So,
(i) L.H.S =
=
=
Since it is of the form
Hence the value of .
(ii)
so its solution would be -1
(iii)
⇒i
So, it is of the form of so the solution would be i.