- AConstant
- BModulus
- CIdentity
- DSignum function
Solution:
{(-1, 1), (1, 1), (-2, 2), (2, 2), (-3, 3), (3, 3), ……}. This function involves relation {(x, y), y = |x|} which is involved in modulus function.
So, above function is modulus function.
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