# Express in real and imaginary parts

• January 2nd 2013, 05:13 AM
WalterWhite
Express in real and imaginary parts
I am having trouble with this question i just dont know where to start, im not looking for a straight up answer just hints to help me on my way to solving it myself.

Express the following complex number in real and imaginary parts;

z = 1 / cos^2(0.5*j*ln(j))
• January 2nd 2013, 05:33 AM
LordoftheFlies
Re: Express in real and imaginary parts
$\ln z=\ln |z|+i\arg z\Rightarrow \ln i=\cdots$

Should be straightforward from there.