1 view (last 30 days)
arsalan mehrabi on 26 Dec 2020
Commented: Ameer Hamza on 27 Dec 2020
hi i have a problem with solve:
syms t1 t2 t3 t4 t5 t6
eqns = (-0.7591*t1+0.3789*t2 == -38.689,0.3789*t1-0.7591*t2+0.3789*t3 == -0.799 , 0.3789*t2-0.7591*t3+0.3789*t4 ==-0.799,0.3789*t3-0.7591*t4+0.3789*t5 == -0.799,0.3789*t4-0.7591*t5+0.3789*t6 == -0.799,0.3789*t5-0.3802*t6 == -0.0412 );
S = solve(eqns,[t1 t2 t3 t4 t5 t6])
but it give me this error:
Invalid expression. When calling a function or indexing a variable, use parentheses.
Otherwise, check for mismatched delimiters.
what can i do to solve it?

Ameer Hamza on 26 Dec 2020
Use square brackets instead of parenthesis in the definition of eqns
syms t1 t2 t3 t4 t5 t6
eqns = [-0.7591*t1+0.3789*t2 == -38.689, 0.3789*t1-0.7591*t2+0.3789*t3 == -0.799 , 0.3789*t2-0.7591*t3+0.3789*t4 ==-0.799,0.3789*t3-0.7591*t4+0.3789*t5 == -0.799,0.3789*t4-0.7591*t5+0.3789*t6 == -0.799,0.3789*t5-0.3802*t6 == -0.0412 ];
%^ use this
S = solve(eqns,[t1 t2 t3 t4 t5 t6])
Ameer Hamza on 27 Dec 2020
I am glad to be of help!