[JEE Advanced 1998] if vmatrix 6i 3i 1 4 3i 1 20 3 i vmatrix x iy
If $\begin{vmatrix}6i&-3i&1\\4&3i&-1\\20&3&i\end{vmatrix}=x+iy$, then
(a) $x=3,y=2$
(b) $x=1,y=3$
(c) $x=0,y=3$
(d) $x=0,y=0$
1 Answer
VAVidaara Admin
✓ Vidaara Team
✓ Accepted
· 4d ago
▲ 0
Correct answer: (d) $x=0,y=0$
Expanding the determinant gives $0$, so $x=0,\ y=0$.
JEE Advanced 1998 · Complex Numbers — verified solution by the Vidaara Team.
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