Variable Substitution Using Symbolic Functions
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syms A(t) B(t) C(t) t
syms X Y Z
D=A+B+C
D(t) =
Ds=subs(D,[A,B,C],[X,Y,Z])
Ds(t) =
I'm trying to substitute a time function for dummy variables that aren't interpreted as functions of time. Here I would assume X,Y,Z would not be functions of t since X,Y,Z aren't declared as such.
My goal is to treat both x(->a) and dx/dt(->b) as two separete variables that I can differentiate to get dx/dt and dx^2/dt^2(->c)
3 个评论
madhan ravi
2020-6-17
See my answer below ;) then if you don’t want the equation to be a function of time.
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