r2=1.5;
r3=4;
r4=3;
v=9;
disp("Part a");
r1_1=2.2;
v3_1=v*r3/(r3+r1_1);
v4=v*r4/(r4+r2);
v01=v4-v3_1;
disp("the value of V0 (in V) is"); disp(v01);
disp("Part b");
r1_2=2;
v3_2=v*r3/(r3+r1_2);
v4=v*r4/(r4+r2);
v02=v4-v3_2;
disp("the value of V0 (in V) is"); disp(v02);
disp("Part c");
r1_3=1.8;
v3_3=v*r3/(r3+r1_3);
v4=v*r4/(r4+r2);
v03=v4-v3_3;
disp("the value of V0 (in V) is"); disp(v03);