How to solve two-order differential equation using ode23

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zhang
zhang 2014-3-19
回答： zhang 2014-3-28
like this equation.this equation is a complex matrix,some of my codes is :
function dydt=mytest1(t,x)
exp1=inv(M)*f;
dydt=[x(4);x(5);x(6);exp1];
I use the ode23 function to sover it.,but I get this error:
Error using odearguments (line 111)
Inputs must be floats, namely single or double.
Error in ode23 (line 113)
[neq, tspan, ntspan, next, t0, tfinal, tdir, y0, f0, odeArgs, odeFcn, ...

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zhang
zhang 2014-3-28
I know how to sove it ,however thanks

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