# Math Help - help again :S

1. ## help again :S

this one i got no ide what to do =S, i dont get it how i should do:
soulve the ekvation The solution should be of the form a+bi

2. ## Re: help again :S

Originally Posted by Petrus
this one i got no ide what to do =S, i dont get it how i should do:
soulve the ekvation The solution should be of the form a+bi
$-13\text{Re}(z)=2~\&~15\text{Im}(z)=9$

3. ## Re: help again :S

ehmm i dont get it...

4. ## Re: help again :S

Originally Posted by Petrus
ehmm i dont get it...
Well the real part of the expression oh the left must equal the real part of the expression on the right.
Same idea for the imaginary parts.

5. ## Re: help again :S

how can i see the re and im on z?

6. ## Re: help again :S

Originally Posted by Petrus
how can i see the re and im on z?
If $z=a+bi$ then $\text{Re}(z)=a~\&~\text{Im}(z)=b$

$\text{Re}(2+9i)=2~\&~\text{Im}(2+9i)=9$

$\text{Re}(z-14\overline{z})=-13a~\&~\text{Im}(z-14\overline{z})=15b$

7. ## Re: help again :S

a = -2/13 is correct
b = 9/15 is wrong ( acording to the computer program) what do i do wrong?

8. ## Re: help again :S

Try reducing 9/15...

9. ## Re: help again :S

heheh ty ur best