- #1

- 11

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I've gotten as far as:

a = gx - dy

b = dx +gy

from

(a+ib) / (g + id)

where

a+ib = (g + id)(x+iy)

I've managed to get

[tex]x={\frac {b-{\it gy}}{d}}[/tex]

and done the same for y (latex is a bit hard for me right now so I can't really show both and I'd like to have a go at it myself when I get what is done for x)

But the book says I'm mean to get:

[tex]x={\frac {{\it ag}+{\it bd}}{{g}^{2}+{d}^{2}}}[/tex]

Help?