Question: plot

hello

 

 

I use

plots[odeplots](dsol,[t,(D(X[5](t))(t),0..5,numpoints=100);

when dsol=dsolve(..........) which is a procedure to plot first derivative of X[5] now I wanna know what should I use to plot second derivative of that

 

I used

plots[odeplots](dsol,[t,(D[1,1](X[5](t))(t),0..5,numpoints=100); but nothing shows up

and some other commands none of them works for me.

 

Thanks

 

bye

 

 

 

 

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