$\"\"$

The vector is $\"\"$ .

The vector valued function of the vector is $\"\"$ .

Definition of derivative:

The derivative of a vector valued function is defined as $\"\"$ .

$\"\"$

Find $\"\"$ .

$\"\"$

Find $\"\"$ .

Substitute $\"\"$ and $\"\"$ in the definition of derivative.

$\"\"$

$\"\"$ .

The derivative of the vector valued function is $\"\"$ .

$\"\"$

The derivative of the vector valued function is $\"\"$ .