Hi , the question and mark scheme answer to part (b) is attached
I don't understand in part (b) why the mark scheme lets z=lambda - (lambda+1) i .
Is it related to the line x+y+1=0 .
I don't understand in part (b) why the mark scheme lets z=lambda - (lambda+1) i . Is it related to the line x+y+1=0 . Thanks
Yes. Given the line in z-plane any point P on the line can be taken as $\displaystyle (\lambda, -(\lambda+1))$ or equivalently $\displaystyle z_P = \lambda + -(\lambda+1).i$
Last edited by kalyanram; Sep 11th 2012 at 04:38 AM.