Question

express i9 +i10+ i11+i12 in the form of a+ib​

Answer 1

Answer:

0

Step-by-step explanation:

MARK IT LIKE BRAINLIST !!!

Answer 2

Answer:

The correct answer is 0+i0

Step-by-step explanation:

Given: i9 +i10+ i11+i12

To find: express the given equation in a+ib​

We know that,

i0=1,   i6=-1

i1=i,  i7=-i

i2=-1,  i8=1

i3=-i, i9=i

i4=1,  i10=-1

i5=i,  i11=-i

=(i3)3 + (i5)2 + (-1) + (-i) + (1)

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

=-2i +2i -1 +1

=0i +0

So, the correct answer after solving is 0i +0 which is in the form of a+ib​