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104. What is the difference output voltage of any signals applied to the input terminals?
(a) The differential gain times the difference input voltage.
(b) The common-mode gain times the common input voltage.
(c) The sum of the differential gain times the difference input voltage and the common-mode gain times the common input voltage.
(d) The difference of the differential gain times the difference input voltage and the common-mode gain times the common input voltage.
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