Version 4
SHEET 1 1288 1044
WIRE 208 -320 208 -336
WIRE 496 -320 496 -336
WIRE 208 -192 208 -240
WIRE 272 -192 208 -192
WIRE 496 -192 496 -240
WIRE 560 -192 496 -192
WIRE 208 -160 208 -192
WIRE 208 -64 208 -80
WIRE 208 -64 144 -64
WIRE 272 -64 208 -64
WIRE 144 -48 144 -64
WIRE 272 -48 272 -64
WIRE 496 -48 496 -192
WIRE 800 -32 736 -32
WIRE 736 -16 736 -32
WIRE 144 48 144 32
WIRE 208 48 144 48
WIRE 272 48 272 32
WIRE 272 48 208 48
WIRE 208 80 208 48
WIRE 496 80 496 32
WIRE 736 80 736 64
FLAG 208 80 0
FLAG 208 -336 0
FLAG 496 -336 0
FLAG 496 80 0
FLAG 736 80 0
DATAFLAG 240 -192 ""
DATAFLAG 528 -192 ""
DATAFLAG 768 -32 ""
SYMBOL res 192 -176 R0
SYMATTR InstName R1
SYMATTR Value {Ra}
SYMBOL res 128 -64 R0
SYMATTR InstName R2
SYMATTR Value {Rb}
SYMBOL res 256 -64 R0
SYMATTR InstName R3
SYMATTR Value {Rc}
SYMBOL current 208 -320 R0
WINDOW 0 40 25 Left 2
WINDOW 3 37 55 Left 2
SYMATTR InstName I1
SYMATTR Value 10u
SYMBOL res 480 -64 R0
SYMATTR InstName R4
SYMATTR Value {Res(Ra,Rb,Rc)}
SYMBOL current 496 -320 R0
WINDOW 0 40 25 Left 2
WINDOW 3 37 55 Left 2
SYMATTR InstName I2
SYMATTR Value 10u
SYMBOL voltage 736 -32 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 42 44 Left 2
WINDOW 3 40 77 Left 2
SYMATTR InstName V1
SYMATTR Value {Res(Ra,Rb,Rc)}
TEXT 472 144 Left 2 !.func Res(x,y,z) {x+y*z/(y+z)}
TEXT -16 88 Left 2 !.op
TEXT -16 144 Left 2 !.param Ra=20 Rb=100 Rc=400