MATLAB: Error when plotting a graph

errorfunctionlineodeplot

Hello, I am trying to plot the solution to the ordinary second order linear inhomogeneous differential equation:

x''(t)= -x + sin(1.1*t).

I am able to get the solution using the dsolve command, but when I try plotting it using 'plot(x,Solution)', I get an error message saying: 'Warning error updating parametrized function line the following error was reported evaluating the function..' and I can't scroll more to see the full error message.

Any help would be great!

Best Answer

Use fplot if you have R2016a or later, ezplot otherwise.

Related Solutions

MATLAB: I can’t plot 2nd order differential equation

I can!

Try this:

syms x(t);
Dx = diff(x);
Dx2 = diff(x,2);
x(t) = dsolve(Dx2+(5*Dx)+(6*x)==100,x(0)==0,Dx(0)==0)
figure(1)
fplot(x, [0 10])
axis([xlim    0  17])
grid

MATLAB: How to simplify differentiation

Use the vpa function:

syms x 
Eqn = (4722366482869645*x)/4722366482869645213696 + 1/25000;
Eqn = vpa(Eqn, 6)

producing:

Eqn =
0.000001*x + 0.00004

Best Answer

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MATLAB: I can’t plot 2nd order differential equation

MATLAB: How to simplify differentiation

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