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//===========================================================================
//chapter 3 example 13
clc;clear all;
//variable declaration
R1 = 1000; //resistance in Ω
R2 = 500; //resistance in Ω
eR1 = 1; //error resistance
eR2 = 1; //error resistance
//calculations
R = (R1*R2)/(R1+R2); //resistance in Ω
X = R1*R2;
Y = R1+R2;
dX = (eR1+eR2); //error in X
//dY = (dR1/Y)+(dR2/Y);
//dY = (R1/Y)*(dR1/R1)+((R2/Y)*(dR2/R2)
dY = ((R1/(Y))*(eR1))+((R2/(Y))*(eR2)); //error in Y
eP = dX+dY; //percentage error in equivaent parallel resistance in %
e = R*(eP/(100)); //error(maximum ossible) in equivalent parallel resistance in Ω
//result
mprintf("percentage error = %3.2f percentage",eP);
mprintf("\nerror in equivalent parallel resistance = %3.2f Ω",e);
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