This Script is already saved on MATLAB and it is used to plot the displacement transmissibility with respect to the frequency ratio as a base excitation example.

$```$

wb$=3$;

wn$=5$;

r$=$wb$/$wn;

$```$

$```$

DT$=$sqrt$((1+(2*$zeta$*$r$).^2)/((1-$r$.^2)^2+(2*$zeta$*$r$)^2))$;

plot$($r$,$DT$,$'color',rand$(1,3))$

hold on

end

xlabel$(\text{'}$Frequency ratio r$\text{'})$

ylabel$(\text{'}$Displacement ratio X$/$Y$\text{'})$

$```$

The error in this Script is:

Select one:a$.$ Don't need to write hold onb. It needs a legend.c$.$ This script is correct.d$.$ DT should be named DR$.$e$.$ plot$($r$,$DT$,$'color',rand$(1,3))$