I have in a .txt file 101 samples of acceleration taken for t=[0:0.1:10].
I also have that the expression of the mathematical through which i can estimate the acceleration :
acc_samp = load('samples.txt') ;
syms y(t) b
mat_model = diff(y(t), t, t) == (20*cos(5*t)*exp(-10*t))/3 - (b*diff(y(t), t))/3 - (100*y(t))/3 ;
interval = (0:0.1:10) ;
Dy = diff(y,t) ;
dis = dsolve(mat_model, [y(0)==0, Dy(0)==0]) ;
acc = diff(dis,t,2) ;
How it is possible to find a b such that acc_samp and acc are equal for t=[0:0.1:10]?