How to convert symbolic calculation to numeric?
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Hi, I want to convert symbolic calculations into numeric one and substitute in the MATLAB program. This is because symbolic computation is taking a lot of time to do. Is there any way to convert symbolic calculation into numeric? Also I have one more question. I defined a function
f=sym('x1^2+2*x2^2+2*x3^2+2*x1*x2+2*x2*x3')
p=[1,1,1];
t2=p(1);
t2=evalAt(f,[x1=p(1),x2=p(2),x(3)=p(3),a=b]);
MATLAB gives error. I really don't understand what is problem. We do such substitutions in other matrices a=p(1) and so on. Why is this error? Really hard time for me. People, please help.
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Answers (1)
Walter Roberson
on 22 Oct 2013
Where did you do the
syms x1 x2 x(3) a
Also note that your expression uses x3 but your evalAt uses x(3)
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