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how to add two sums by using loops?

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rising falcon
rising falcon 2015-10-27
评论： Image Analyst 2015-10-29
what commond will be use for this ∑_(j=1)^5▒∑_(i=1)^2▒(i+j)
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rising falcon
rising falcon 2015-10-27
编辑：rising falcon 2015-10-28

how to solve it by using loops? ∑_(j=1)^5▒〖j+〗 ∑_(i=1)^2▒i

Stephen23
Stephen23 2015-10-27
编辑：Stephen23 2015-10-27
MATLAB has more efficient ways of doing many mathematical operations, without requiring loops. Read the link that I gave.
Can you please explain the syntax that you use to write the sum, or upload an image so we can see the original.

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回答（1 个）

the cyclist
the cyclist 2015-10-27
I didn't fully understand the question, but maybe you want a structure like
NI = 5;
NJ = 10;
sum = 0;
for ii=1:NI
for jj=1:NJ
sum = sum + 3;
end
end
Be aware that there are often vectorized methods that will be more efficient for calculation.
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the cyclist
the cyclist 2015-10-27
Is this homework? I don't want to solve the whole problem for you. It should be VERY easy for you to adapt what I have written.
Image Analyst
Image Analyst 2015-10-29
One thing to change is the name of the variable. Don't use sum because it's the name of an important built-in function.

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