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19-01-2018
Mathematics

contestada

6
c.find the domain and range of the function that assigns to a bit string the number of ones minus the number of zeros in the string

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19-01-2018

Let bitstrings have a maximum length of L bits.
and f(x)=number of one-bits less number of zero-bits.
x=length of bitstring in bits.

Case 1: x=L, all L bits are ones
Then f(x)=L
Case 2: x=L, all L bits are zeroes
Then f(x)=-L

Then
dom f(x)=[0,L]
range f(x) = [-L,L]

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