I’m working with a Switch funtion downside. I wish to get the illustration of {x, $theta$} with the given equtions(under).

Within the equation x10 and x20 means the preliminary worth of x1 and x2. all the opposite letter is undetermined.

I wish to get the represented type of {x, theta} primarily based on these two equations.

Right here is my code:

ClearAll[x, [Theta], c];
{a, b} = {{1, -L/2}, {1, L/2}}.{x, [Theta]};
{Subscript[F, 1], Subscript[F, 
   2]} = {{okay + c s, 0}, {0, okay + c s}}.{a, 
     b} - {{okay + c s, 0}, {0, okay + c s}}.{Subscript[x, 1], Subscript[x, 
     2]} + c {x10, x20};
eqn = {x, [Theta]} - {{1/(M s^2), 1/(M s^2)}, {-L/(2 J), L/(
       2 J)}}.{Subscript[F, 1], Subscript[F, 2]} + {g/s^2, 0} == {0, 
    0};
Assuming[{s != 0, M != 0, J != 0},
 Reduce[eqn // Thread, {x, [Theta]}, Reals]]

That is the output:

Cut back::nsmet: 无法利用 Cut back 现有的方法求解该系统.

the chinses characters means “you possibly can’t use the unique strategies in Cut back` to unravel this method”

Thanks all.