Adding number in a sequence

Question

Abul Hasib 2019-9-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481494-adding-number-in-a-sequence

评论： Guillaume 2019-9-21

How do i make a code,where I have to add the previous numbers to next numbers in a sequence. I used a for loop

for jj=0:13

x=jj

this code gives me the value of 0 to 13.right?

but I need to add all the terms with a previous term . what can I do?

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Abul Hasib 2019-9-21

编辑：Abul Hasib 2019-9-21

n=[1:15]

while n==isprime(n)

for n=1:15

for jj=0:16

x=(n+jj)^(99/100)

end

thats what I have done so far,,but I need to add the values of x with each other. when i run the function i only ge6t the name of the file on the command window ,,no output except for the array of n in 1st line

Guillaume 2019-9-21

I have absolutely no idea what you're attempting to do with that code. It doesn't make any sense.

i only ge6t the name of the file on the command window ,,no output except for the array of n in 1st line

That would be because the while condition is not true to start with. So the code inside the while is never executed and only the first line has any effect.

Note that isprime return either 0 or 1. So if n is scalar, n == isprime(n) will definitively be false for any n different from 0 or 1. And since isprime is 0, the only n value for which n == isprime(n) is true is n = 0. But also note that your n is a vector.

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Answer 1

David Hill 2019-9-21

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481494-adding-number-in-a-sequence#answer_392925

在 MATLAB Online 中打开

movsum(jj,2);

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Abul Hasib 2019-9-21

编辑：Abul Hasib 2019-9-21

what does the 2 do in that function? I am new to matlab,,so i am having hard time putting these all togteher. also it said for the value of n=-13, x should be 63.6