Syntax error in Simulink

I am getting a syntax error in Simulink in a Fcn block:

((u(2)*(u(3))^2)/12)-((u(2)*u(3))^2)/8)*((1-2*(u(1)/u(3)))-(1/3)*(1-2*(u(1)/u(3)))^3)

I really can't find the problem in this so a little help is appreciated.

Answer 1

[Azzi Abdelmalek]

You have a problem with brackets

(u(2)*u(3)^2)/12-((u(2)*u(3))^2)/8*(1-2*u(1)/u(3))-(1/3)*(1-2*u(1)/u(3))^3

[Sebastian]

Thank you, you were right, I used too many unnecessary brackets.

[Ragul E]

c1*(c2/u(2)-c3*u(3)-c4)*(exp-c5/u(2))+c6*u(1)

same problem tried solving it by reducing brackets but didn't work

Answer 2

[Cristina Avilez]

The expression: m*(u(1)-l*sin(u(3))*(u(2)^2)+l*u(4)*cos(u(3))) in 'Pendulo_1/Sistema_dinamico/N' has a syntax error

But I don't know where the problem is, someone can help me, please.

[Azzi Abdelmalek]

Cristina, Have you noticed that your comment is considered as an answer? If you want to ask question, delete this comment, then go to the section "Ask a question"

Answer 3

[Muhammad Umar Mubashir]

@Cristina Avilez

I am facing same issue.

How did you resolve this error?

Please help me. Thanks.

Answer 4

[Kamlesh GUPTA]

(c1*(c2/u(2)-c3*u(3)-c4))*(exp(-c5/u(2))+c6*u(10)

I am getting a syntax error in Simulink in a Fcn block:

How did you resolve this error?

Please help me. Thanks.