loop iteration in matlab
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I have the following polynomial
F(x) = 1^5 + (1^5 + 2^5)+ (1^5 + 2^5 + 3^5) + ... + (1^5 + 2^5 + 3^5 + 4^5 + ... + x^5)
How can I write a loop iteration for this polynomials?
1 个评论
Why do you need a loop?
1^5 + (1^5 + 2^5) + (1^5 + 2^5 + 3^5) + (1^5 + 2^5 + 3^5 + 4^5)
sum(cumsum((1:4).^5))
采纳的回答
x = 10 ;
thesum = 0 ;
for i = 1:x
thesum = thesum+sum((1:i).^5) ;
end
5 个评论
Zeynep Toprak
2020-11-20
KSSV
2020-11-20
Yes very much it can be done: See Rik answer.
Zeynep Toprak
2020-11-20
Zeynep Toprak
2020-11-20
KSSV
2020-11-20
Hey..yes there is a typo error in the code. I have edited it now.
更多回答（1 个）
Rik
2020-11-20
I would suggest not using a loop:
F=@(x) sum( ( (1:x).^5 ).*(x:-1:1) );
2 个评论
Zeynep Toprak
2020-11-20
Rik
2020-11-20
Yes, and the code posted by Stephen in a comment is also vectorized.
There are probably some exceptions I'm not thinking of, but if you don't see a loop (or cellfun/arrayfun) the code is vectorized.
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