## Question:

Design an op amp circuit such that

${ v }_{ 0 } = - 2{ v }_{ 1} + 4{ v }_{ 2 } - 5{ v }_{ 3 } - { v }_{ 4 }$

Let all the resistors be in the range of 5 to 100 kΩ.

## Step-by-step

A summing amplifier shown below will achieve the objective. An inverter is inserted to invert ${ v }_{ 2 }$. Let R = 10 kΩ .
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