Inner matrix dimensions must agree.

this is matlab verrrry simple program but i have verrrry simple problem :) this is the error ( Error using * Inner matrix dimensions must agree.

Error in vib (line 9)
x=(a1+a2*t)*exp(-wn*t); )

and that is the program

vo=input('vo=');
xo=input('xo=');
wn=input('wn=');
syms t;
syms wn;
a1=xo;
a2=vo+(wn*xo);
t=0:1;
x=(a1+a2*t)*exp(-wn*t);
nx=double( subs(x,'t', t));
figure(1);
plot(t,nx);

what can i do to solve this program

[bym]

I think you have already resolved this based on this question

http://www.mathworks.com/matlabcentral/answers/72843#answer_82870

Answer 1

[Walter Roberson]

Use .* instead of *