Size input must be scalar error while using rand

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Cassandra Little
Cassandra Little 2017-1-30
评论： Cassandra Little 2017-1-30
I'm trying to run the code:
k = 2:5;
A = rand(k, 4);
disp(rref(A));
It keeps giving me the error "size input must be scalar." I don't know what to change... Thank you in advance.

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Stephen23
Stephen23 2017-1-30
The syntax you use does not work because k is a vector. Taking a wild stab in the dark:
for k = 2:5
A = rand(k,4);
... your code
end

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