Question

Write in the form a+ib
-i³⁹​

Answer 1

- i^39

= - (i^38) × i

= - (i^2)^19 × i

putting (i^2) = (-1)

= - (-1)^19 × i

= - (-1) × i

= i

= 0 + i

Write in the form a+ib we got 0 + i

i.e , a= 0, b=1