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the function enclosed within the square brackets, ie [ ] is a step function.
If you did not know what a step function is, here goes:
A step function basically returns the integer lower than or equal to the value of x that is there in the square bracket.
for example, for a function f(x) = [x], if x = 4.98, [x] = [4.98] = 4 (Integer lower or equal to).
[5.66] = 5.
[4] = 4.
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Moderation Team
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