If z= (1 2 , 1 ), then z^ -1 is equal to : - Vidyadip

MCQ

If $z=\left(\frac{1}{2}, 1\right)$, then $z^{-1}$ is equal to :

A
$\left(-\frac{2}{5}, \frac{4}{5}\right)$
B
$\left(\frac{1}{5}, \frac{2}{5}\right)$
C
$\left(\frac{1}{5},-\frac{2}{5}\right)$
✓
$\left(\frac{2}{5},-\frac{4}{5}\right)$

✓

Answer

Correct option: D.

$\left(\frac{2}{5},-\frac{4}{5}\right)$

(D)

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