How to use ODE4 to solve second order ODE
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How to use ode4 to solve second order ODE? ode4(https://www.mathworks.com/matlabcentral/answers/98293-is-there-a-fixed-step-ordinary-differential-equation-ode-solver-in-matlab-8-0-r2012b)
I tried to put in the following equation into matlab
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1152788/image.png)
Initial Condition:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1152793/image.png)
This gave me an error
syms y(x)
Dy = diff(y);
ode = diff(y,2) == (1/4)*y + (1/2);
cond1 = y(0) == 0;
cond2 = Dy(0) == 1;
h = 0.5
y0 = [0 1];
tspan = 0:h:60
yx = ode4(ode, tspan, y0);
plot(tspan, yx)
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