The Circuit Shown Below, (A) Write a Node Equation at Node

Essay

the circuit shown below, (a) Write a node equation at node 1 by summing the currents leaving node 1 .
(b) Write a node equation at node 2 by summing the currents leaving node 2 .
(c) Solve the two node equations to find $V _ { 2 }$ at node $2 .$
(d) Find the equivalent resistance seen from the terminals $a$ and $b$ looking into the circuit after deactivating the voltage source and the current source.