46.2k views
0 votes
If i= √-1 what is the value of i^3

User Ldrut
by
6.4k points

1 Answer

4 votes
Square both sides
i = sqrt(-1)
i^2 = [ sqrt(-1) ]^2
i^2 = -1

Now multiply both sides by i
i^2 = -1
i*i^2 = i(-1)
i^3 = -i

Final Answer: -i
(this is negative i)
User Lee Salminen
by
6.2k points