Find all values complex equation

alexcc17
Messages
48
Reaction score
0

Homework Statement


i.5 - i


Homework Equations


zc=ec log(z)

z1/n=exp[(1/n) log(z)], n is in integer


The Attempt at a Solution



letting c=.5-i and z=i so

zc=e(.5-i) log(i) = e.5 log(i)*e-i log(i)

from the second equation I reduced it to:
i.5*e-i log(i) but I'm not sure where to go from there since the second known equation doesn't apply to the e^(-i log(i)) part
 
Physics news on Phys.org
alexcc17 said:

Homework Statement


i.5 - i


Homework Equations


zc=ec log(z)

z1/n=exp[(1/n) log(z)], n is in integer


The Attempt at a Solution



letting c=.5-i and z=i so

zc=e(.5-i) log(i) = e.5 log(i)*e-i log(i)

from the second equation I reduced it to:
i.5*e-i log(i) but I'm not sure where to go from there since the second known equation doesn't apply to the e^(-i log(i)) part

exp(log(i)*(.5-i)) is a good start. Now figure out what possible values log(i) could have.
 
I got it thanks though
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top