This technology is known as an anti-climb collar.
Spiked collars are used to protect equipment mounted on poles like CCTV or in areas where you can easily climb a pole over a security fence. This technology offers a very simple and practical solution to protecting poles against thieves and vandals.
Answer:
Explanation:
a) The Left-most derivataion for ababccddcc
S ⇒ AB
L.M.D
→ aAbB
→ aabbB
→ aabb CBd
→ aabb CCdd
b) Derivation tree for the derivation in part(a)
The attached diagram ilustrate the three derivation
c) To define L(G) with set notation
L(G) = {a
∧n
b
∧n
|n ≥ 0}.
B) each person gets to contribute in their own unique way