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How to `subs` with both scalar variable and arrays?

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wei zhang
wei zhang on 22 Jun 2020
Answered: madhan ravi on 22 Jun 2020
I am evaluating some expression with subs. I need to input a scalar variable and an array. But it always give errors as I substitute them in one command as below.
e.g.
syms x
syms t [1 3]
g = x+t1+t2;
result = subs(g,{x,t},{1,[1,2,3]});
This is a mini case for my problem. How to solve this error? Must I subs the variables in several independent steps?

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Accepted Answer

madhan ravi
madhan ravi on 22 Jun 2020
syms x
syms t [1 3]
g = x+t1+t2;
t_vars = num2cell(t);
t_vals = num2cell(1:3);
result = subs(g,{x,t_vars{:}},{1,t_vals{:}})

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