Hi folks, I have been trying to solve that problem for the last 2 days, but I dont get it:
Lets say I have a velecity vector which is dependent from t:
Now I can find the velocity at any given time by typing for instance: v(4) works perfectly.
What I want to do now is finding the acceleration vector (all components of v(t) diff t) dependent from t, so I can also find the acceleration vector at time=6 by typing: a(6)
When I try:
, I get the right result.
But, when i type
,I get an error, because t is substittuted by 5 before executing the derivation, and a derivation by 5 is obviously not possible.
I also tried any configuration with the subs command, trying to substitute t by e.g. u, perform derivation and resubstitute u by t. Does not work. The acceleration has to be the same kind of vector as velocity (no list).
I am very greatful for your help!