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Problem on ideal op-amp circuit

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Find v and i for the circuit shown. Assume an ideal op amp. Please show how you arrived at your answer, and why the final answer is a positive or negative number.
=================================================
v=
a) -5V
b) -4V
c) +4V
d) +5V
=============================================
i=
a) -0.25ma
b) -0.2ma
c) +0.1ma
d) +0.2ma
=============================================

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