Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have this transfer function: $$H(x)= \frac{1}{x+i(1+x)}$$ How can I extract module and phase and represent them?

share|cite|improve this question
up vote 0 down vote accepted

Note that the module and phase of $1/z$ are the reciprocal of the module of $z$ and the negative of the phase of $z$, respectively. In case you don't know how to determine the module and phase of $x+\mathrm i(1+x)$, you might want to look at this.

share|cite|improve this answer
Thank you. I forgot those properties that helped me solve the problem. – Advicer Feb 8 '12 at 13:10

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.