Question

pease any short trick​

Answer 1

Answer:

option(d)

Step-by-step explanation:

1+i/1-i

=(1+i)(1+i)/(1-i)(1+i)

=(1+i²+2i) / (1-i²)

=1-1+2i/(1+1)

=2i/2

=i

So i^m=1

You may remember that

i^2=-1

i^4=1

i^6=-1

i^8=1

so on

so least positive value of m=4