This is what I have done.

Group real numbers and imaginary numbers

Solve for real number

Solve for imaginary number

.. Can someone verify if it's legal to divide both sides by ?

Printable View

- June 1st 2010, 08:42 PMCthul[Solving Complex Numbers] Division legal?
This is what I have done.

Group real numbers and imaginary numbers

Solve for real number

Solve for imaginary number

.. Can someone verify if it's legal to divide both sides by ? - June 1st 2010, 09:02 PMpickslides
You can divide both sides by but by inspection

- June 1st 2010, 09:05 PMCthul
Oh, okay. Appreciated your verification.

- June 1st 2010, 09:08 PMProve It
Yes, the division by is legal. However, these sorts of problems are easiest if you realise that for two complex expressions to be equal, their real parts have to be equal and their imaginary parts have to be equal.

So if you write each side in terms of its real and imaginary parts, then you can equate real and imaginary parts.

In your case:

Now equate real and imaginary parts:

and .