Conjugates (Leaving Cert Mathematics): Flashcards

Change the sign of the imaginary part

$\bar{z}$

$a - bi$

$2 - i$

$-8 + 2i$

$5i$

$10$

The number itself

Evaluate what's under the bar first

$4 - i$

$z$

$\overline{z} + \overline{w}$

$\overline{z} - \overline{w}$

$a\overline{z} + b\overline{w}$

$\overline{z} \cdot \overline{w}$