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4 cards from this section. Quick, good the night before a test.
Define a set.
Think about how we categorize objects.
What is an empty set?
Consider what happens if there are no items in a group.
What is a set?
Think about sets like bags or boxes.
True or False: A singleton set has more than one element.
Consider the definition of a singleton.
Given sets A = {1, 2, 3}, B = {3, 4}, and C = {1, 5}, determine A ∪ (B ∩ C).
Work through the operations step-by-step.
If f(x) = 3x + 1 and g(x) = 2x, find (f◦g)(x).
Start by plugging g(x) into f.
6 more questions in this section. Enroll free to practise them all.
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