Analog Electronics
If the base resistor is very small, the transistor will operate in the

 active region.
All of these
  saturation region.
 cutoff region.

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Analog Electronics
The typical input stage of an opamp has a

  differential input and single - ended output.
  differential input and differential output.
  single - ended input and differential output.
  single - ended input and single-ended output.

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