Let a = -i + j + 2k, b = i - j - 3k, c = a × b and d = c × a. The… | JEE Main 2026 Mathematics PYQ

MCQMediumJEE Main 2026 · 23 January, Shift 1Cross Product

Let $\vec{a} = -\hat{i} + \hat{j} + 2\hat{k}$ , $\vec{b} = \hat{i} - \hat{j} - 3\hat{k}$ , $\vec{c} = \vec{a} \times \vec{b}$ and $\vec{d} = \vec{c} \times \vec{a}$ . Then $(\vec{a} - \vec{b}) \cdot \vec{d}$ is equal to:

A
$-4$
B
$4$
C
$-2$
D
$2$

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