A∩B: When finding the intersection, for the less than sign, always take the smaller one; For the greater than sign, always take the larger one. So: a ∩ b = {x |-2.

CU(A∪B): When calculating union, the less than sign always takes the larger value; For the less than sign, always take the smaller one.

So: a ∪ b = {x |-3 ≤ x

CU(A∪B)={x|x≥3 or x < -3}

(CUA)B:

CUA={x|x≤-2 or x≥3}

So: (CUA)∪B={x|x≤2 or x≥3}

Answer ∩ (cub):

CUB = {x | x & lt-3 or x & gt2}

So: a ∩ (cub) = {x | 2.

(CUA)∩ (cub):

CUA={x|x≤-2 or x ≥ 3} cub = {x | x

So: (CUA)∩(CUB)= {x | x ≤- 2 or x & gt2}

I hope it will help you, hope to adopt it, thank you ~

If you don't understand, just ask O(∩_∩)O~