- #1
UrbanXrisis
- 1,196
- 1
i am to find the 4th roots of -16
[tex](-16)^{1/4}=2i^{1/4}[/tex]
[tex]i=e^{i \pi/2}[/tex]
[tex]i^{1/4}=e^{i \pi/8}[/tex]
[tex](-16)^{1/4}=2e^{i \pi/8}[/tex]
or
[tex](-16)^{1/4}=2e^{i 5\pi/8}[/tex]
or
[tex](-16)^{1/4}=2e^{i 9\pi/8}[/tex]
is this correct?
[tex](-16)^{1/4}=2i^{1/4}[/tex]
[tex]i=e^{i \pi/2}[/tex]
[tex]i^{1/4}=e^{i \pi/8}[/tex]
[tex](-16)^{1/4}=2e^{i \pi/8}[/tex]
or
[tex](-16)^{1/4}=2e^{i 5\pi/8}[/tex]
or
[tex](-16)^{1/4}=2e^{i 9\pi/8}[/tex]
is this correct?