- #1

Eng studies

- 13

- 0

- Homework Statement
- Convert to polar form and find z'8 using de moivre theorem, plot on argand diagram

- Relevant Equations
- Demoivre - (cos0+jsin0)'n = cosn0 +jsinno

Hi all any help on this would be great I cant seem to progress with the theorem,

z= -2 + j > R sqrt (-2)'2 + (-1)'2

r = 2.24

0= Arctan(-1) = 26.57 Polar form = 2.24(cos(26.58)+jsin(26.58)

-2

Demoivre - (cos0+jsin0)'n = cosn0 +jsinno

Could some one work a similar example to assist me through applying this ?

Thanks

z= -2 + j > R sqrt (-2)'2 + (-1)'2

r = 2.24

0= Arctan(-1) = 26.57 Polar form = 2.24(cos(26.58)+jsin(26.58)

-2

Demoivre - (cos0+jsin0)'n = cosn0 +jsinno

Could some one work a similar example to assist me through applying this ?

Thanks