why do I receive syms requires Symbolic math tool box
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syms M m L q d_q dd_q x d_x dd_x g b J F
eq1= (M+m)*dd_x + m*L*(dd_q*cos(q)-d_q^2*sin(q))+b*d_x-F;
eq2= (J+mL)*dd_q+m*L*dd_x*cos(q)+m*L*g*cos(q);
solu=solve(eq1,eq2,dd_x,dd_q)
solu.dd_x
solu.dd_q
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Accepted Answer
Stephan
on 9 Dec 2022
Edited: Stephan
on 9 Dec 2022
"why do I receive syms requires Symbolic math tool box?" - Simple: Because syms is part of the symbolic toolbox. If your license doesn't cover that toolbox you are not able to use it's features.
In eq2 i replaced (J+mL) through (J+m*L):
syms M m L q d_q dd_q x d_x dd_x g b J F
eq1= (M+m)*dd_x + m*L*(dd_q*cos(q)-d_q^2*sin(q))+b*d_x-F;
eq2= (J+m*L)*dd_q+m*L*dd_x*cos(q)+m*L*g*cos(q);
solu=solve(eq1,eq2,dd_x,dd_q)
solu.dd_x
solu.dd_q
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