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10 questions from this quiz
Different inputs give different outputs
f(x1)=f(x2) ⟹ x1=x2f(x_1) = f(x_2) \implies x_1 = x_2f(x1)=f(x2)⟹x1=x2
Horizontal line intersects at most once
No
Every codomain element is mapped to
The range
Yes
Negative values aren't reached
Both injective and surjective
They have inverse functions
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