smaxT=1-860/1000
R2=0.25
X2=R2/smaxT
Tmax=180
k=Tmax*X2

s=0.045
T=2*100.6/((R2/s)^2+X2^2)*R2/s   //some mistake in the book at this point. (What is V1/a)
T=105
disp(T)

R2ext=X2-R2
disp(R2ext)