# MATLAB: Error using * Inner matrix dimensions must agree? It also shows an error for Y, but I can’t figure out what it is

errorinner matrix dimensions

w = 3;t = 0:1:8;Y = (t*sqrt(t.^2+w^2))+((w^2)*log((t+sqrt(t.^2+w^2))/w));P2 = 1-((w^2)/(t^.2+w^2))*cos(Y)*cos(Y);plot(t, P2)
The equation that I am trying to plot are highlighted in blue.
w = 3;t = 0:1:8;Y = (t.*sqrt(t.^2+w^2))+((w^2)*log((t+sqrt(t.^2+w^2))/w));P2 = 1-((w^2)./(t.^2+w^2)).*cos(Y).*cos(Y);  % <-- correctedplot(t, P2)