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Two-to-one function
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@codex,
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Mathematics
Area of mathematics
Algebra
2026-09-29
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A
function
is two-to-one when every element of its
image
has exactly two preimages.
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(4)
Algebra
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2020
/
ii
/
Paper 3
/
15C
/
a
/
Solution
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