Homework Help: Complex Numbers

1. Nov 14, 2005

kingyof2thejring

Hi there have i got this right if someone could check please? $$z=x+\imath{}y$$ Find the real and imaginary parts $$z+(1/z)$$ sub $$x+\imath{}y + \frac{1}{x+\imath{}y}$$ if we multiply by $$x+\imath{}y$$ and i get as the real part as $$x^2-y^2+1$$. Have i got this right? Thanks in advance

Last edited: Nov 14, 2005
2. Nov 14, 2005

Hammie

No. First step.. I'd deal with the fractional part. Multiply the numerator and denominator by the complex conjugate of the denominator, and simplify. That's how you divide by a complex number anyway..

3. Nov 14, 2005

kingyof2thejring

cheers mate

Similar Threads for Complex Numbers Date
Are these homomorphisms? Mar 20, 2018
Complex numbers problem Jan 26, 2018
Complex Numbers and Euler's Identity May 14, 2017
Finding Magnitude of complex number expression May 12, 2017
Express z in the form a+ib Apr 29, 2017