I have a long code which has syms like q1(t) q2(t) ... I have a 3x1 matrix which is in format like: n1=a1*q3(t) a2*sin(q2(t) 0 How can i call the second row? Because when i try to call it like n1(2,1), algorithm perceive it as i attend a value to t.

syms t q2(t) q3(t) a1 a2 n1 = [a1*q3(t);a2*sin(q2(t));0]; n1(2,1) % extract element (2,1) n1(2,:) % extract complete 2nd row

Extracting symbolic values from symbolic matrix

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Mustafa Duran le 11 Jan 2023

Réponse apportée : Torsten le 12 Jan 2023

I have a long code which has syms like q1(t) q2(t) ...

I have a 3x1 matrix which is in format like: n1=a1*q3(t)

a2*sin(q2(t)

How can i call the second row? Because when i try to call it like n1(2,1), algorithm perceive it as i attend a value to t.

Torsten le 12 Jan 2023

syms t q2(t) q3(t) a1 a2

n1 = [a1*q3(t);a2*sin(q2(t));0];

n1(2,1) % extract element (2,1)

ans =

n1(2,:) % extract complete 2nd row

ans =

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