Consider the circuit diagram given below. Write node equations for $1,2,3,4.$

$\backslash$table$[[$Write $1.$ Node Equation,$],[$Write $2.$ Node Equation,$],[$Write $3.$ Node Equation,$],[$Write $4.$ Node Equation,$]]$

Calculate each parameters given below. Do not forget to put your units and signs.$(\frac{+}{-})$

$\backslash$table$[[V_{SI},],[V_{St},],[V_x,],[V_Y,],[V_{R1},],[V_{R2},],[V_{RI},],[V_{R4},],[V_{RS},],[V_{RE},]]$

$\backslash$table$[[$InI$,],[$In$,],[$Ins$,],[I_B,],[$Ins$,],[IR{6}^6,]]$