You forgot to expand and simplify it... you only did step one, carry on your doing great 4 marks doesn’t come easy :)
Answer:
following are the solution to the given points:
Step-by-step explanation:
In point a:


calculating unit vector:

the point Q is at a distance h from P(6,6) Here, h=0.1

the value of Q= (5.92928 ,6.07071 )
In point b:
Calculating the directional derivative of
at P in the direction of 



In point C:
Computing the directional derivative using the partial derivatives of f.

All it did was shrink in size and move to the square diagonal from it
Answer:
3
Step-by-step explanation:
just do (-1/2) x (-6) where the negatives cancels out and half of 6 is 3
Brainilist Maybe?