Let $\vec a,\vec b$ and $\vec c$ be thre

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Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Vectors

Question:

Let $\vec a,\vec b$ and $\vec c$ be three vectors. Then scalar triple product $[\vec a\,\vec b\,\vec c]$ is equal to

Options:

$[\vec b,\vec a,\vec c]$

$[\vec a,\vec c, \vec b]$

$[\vec c, \vec b,\vec a]$

$[\vec b, \vec c,\vec a]$

Correct Answer:

$[\vec b, \vec c,\vec a]$

Explanation:

Using cyclic nature of scalar triple product.

$[\vec a\,\vec b\,\vec c]=[\vec b\,\vec c\,\vec a]=[\vec c\,\vec a\,\vec b]$

So, option (4) is correct.