how to find symprod for double type values if i take it as seperate function. I am getting this error Undefined function 'symprod' for input arguments of type 'double'. Error in practise (line 5) y=symprod(x,j,1,3);

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MAMATHA YADAVALLI
回答： Steven Lord 2018-4-3
function y= practise(k)
k=2;
x=(rand(4)).*k;
syms j;
y=symprod(x,j,1,3);
end

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Birdman
Birdman 2018-4-3
Change this line
x=(rand(4)).*k;
to
x=sym(rand(4).*k);
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Steven Lord
Steven Lord 2018-4-3
You want to compute the product of the elements of x? If that's the case, don't use symprod. There are no symbolic calculations necessary. Just use the prod function instead.

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