
Math WS 1 Vocab Quiz
Quiz
•
English
•
University
•
Practice Problem
•
Hard
Wiegand Sean
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A set containing all real numbers between endpoint1 and endpoint2. The endpoints can be real or infinite (either –∞, or ∞). If the ____ is not the empty set, then endpoint1 is not greater than endpoint2.
Open interval
Degenerate interval
Real interval
Proper interval
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The function f: X →Y, is invertible iff there exists a function, h: Y →X such that h⸰f = id X and f⸰h = id Y. Alternative definition: the function f: X →Y, is invertible iff there exists a function, h: Y →X such that ∀x ∈ X, y=f(x), when x=h(y).
Invertible Function
Inverse Function
Partial Function
Involuntary Function
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A real interval containing no real numbers between endpoint1 and endpoint2, where the endpoints are real and equal. Any interval with endpoint1 > endpoint2 is also considered empty.
Zero interval
Degenerate interval
Real interval
Empty interval
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A function, ι: X →Y, which always produces a value equal to its argument and X is a subset of Y
Identity Function
Inverse Function
Partial Function
Inclusion Function
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A real interval, for which there exists no real number smaller than all elements in the interval and no real number larger than all elements in the interval. Alternative definition – a real interval that is left-unbounded and right unbounded.
Unbounded interval
Closed interval
Infinite interval
Proper interval
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A function, id X : X →X, which always produces a value equal to its argument
Identity Function
Inverse Function
Partial Function
Inclusion Function
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A real interval, which is neither empty nor degenerate. Alternative definition – a real interval is proper iff it contains uncountable many real numbers.
Open interval
Degenerate interval
Real interval
Proper interval
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