2. (20 points) Show your work to nd the domain and range for each of the following cases: [a] The function that assigns to a bit string the number of ones minus the number of zeros in the string. (b) The function that assigns to each pair of positive integers the inverse of the second integer of that pair. [c] The function that assigns to a bit string the number of bits in the string. (d) The function that assigns triple the next largest integer to a negative We) The function that assigns to a bit string the number of one bits in the string