i don't know why this error ,,

x = 0:2:50;
y = y+(9.8-(12.5*y/68.1)).*dt;
dt=2;
plot(x,y)

i draw graph but

??? Error using ==> times Matrix dimensions must agree.

Error in ==> Untitled at 2 y = y+(9.8-(12.5*y/68.1)).*dt;

plz help me

[bym]

are you sure that is the error your getting?

Answer 1

[bym]

Perhaps you want:

x = 0:2:50;
dt=2;
y = x+(9.8-(12.5.*x/68.1)).*dt;

plot(x,y)