Fill in the blanks

The values of k for which and is parallel to holds true are _______.

Given that,

⇒

⇒ |k| < 1

⇒ -1 <k<1

Also, is parallel to

⇒ k cannot be equal to , otherwise it will become null vector and then it will not be parallel to .

Since, k is along the direction of and not in its opposite direction.

∴ k ∈ (-1,1) –