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5n*[(2i)^(n-1) ]=11520

n=?

the answer in the book is n=9

notice i = (-1)^0.5

how do i solve this equation

i tried to solve it in many ways including logarithims

but log and i (complex numbers)

i don't know if its legal to do

any way i didnt study this logarithims of i (complex numbers)

so i don't think that this is the right way.

please help

n=?

the answer in the book is n=9

notice i = (-1)^0.5

how do i solve this equation

i tried to solve it in many ways including logarithims

but log and i (complex numbers)

i don't know if its legal to do

any way i didnt study this logarithims of i (complex numbers)

so i don't think that this is the right way.

please help

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