Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Vectors

Question:

Which of the following expressions are meaningful?

Options:

$\vec u.(\vec v×\vec w)$

$(\vec u. \vec v).\vec w$

$(\vec u.\vec v)\vec w$

$\vec u×(\vec v.\vec w)$

Correct Answer:

$\vec u.(\vec v×\vec w)$

Explanation:

$\vec u.(\vec v ×\vec w)$ is also correct.

Since $\vec u$ is a vector

$\vec v ×\vec w$ is a vector as well as $\vec u.(\vec v ×\vec w)$ is feasible.