Let z = a + ib. Then
[imath]\dfrac{z}{z_1} = \dfrac{a + ib}{2 + i}[/imath] Hint: Multiply top and bottom by 2 - i.
[imath]\overline{z} z_1 = (a - ib)(2 + i)[/imath]. Hint: Multiply this out.
You will get two equations in a and b to solve simultaneously.
Let us know what you are able to do.
-Dan
So that you have something to equate your expressions involving a and/or b to.But why are the results of Re and Im given?
They are just part of the equations that gives a and b. It's like asking for the integer part of a number or telling you to choose the negative value of the square root in an equation.But why are the results of Re and Im given?
Here with some change jn notation is an approach.How to do this task I have no idea or idea how