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10 questions from this quiz
f(x)=x2+2f(x) = x^2 + 2f(x)=x2+2
Natural numbers: {1,2,3,…}\{1, 2, 3, \ldots\}{1,2,3,…}
Set of xxx values we can feed the function
Set of yyy values y=f(x)y = f(x)y=f(x) can take
f(x)≤2f(x) \leq 2f(x)≤2
Undefined for x≤−3x \leq -3x≤−3
g(x)≥e2g(x) \geq e^2g(x)≥e2
Draw a horizontal line; if it intersects twice
Many-to-one
Many-to-many
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