Question

Find Re(z) and Im(z) if z=5i^11+7i^3​

Answer 1

Answer:

so,  Re(z) = 0 and Im(z) = -12

Step-by-step explanation:

z = 5i^11 + 7i^3

z = 5 * i^8 * i^3 + 7 * i^3

( i^(multiple if 4) = 1 and i^3 = -i)

z = -5i + -7i

z = -12i