Here's the question
Here's my attempt
If z is in imaginary axis, that's x=0, so if I take the bits I have highlighted in red, and set them to zero ... looks like a circle to me not a line?
I must be doing something really stupid?
... ok spotted problem !!
Thanks for posting! You just need to create an account in order to submit the post
Already a member?
Oops, something wasn't right
please check the following:
Not got an account?
Sign up now
You get these gems as you gain rep from other members for making good contributions and giving helpful advice.