Find the voltage range at which the multiplier can be used as a square

1.	Find the voltage range at which the multiplier can be used as a squarer circuit?
A.	0 V<sub>in</sub>
B.	V<sub>ref</sub> V<sub>in</sub>
C.	0 V<sub>ref</sub>
D.	All of the mentioned
Answer» D. All of the mentioned

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