please help me check the error

Hi, I am just doing some homework after spring break so I forgot some important things about matlab saving sript.
This is my homework: Write a function called odd_rms that returns orms, the square root of the mean of the squares of the first n positive odd integers, where n is a positive integer and the only input argument.
So far, I have tried to do it and I am actually know how to write a code for this:
This is my try :
function orms=odd_rms(n)
A=sqrt(mean((1:2:2n-1).^2));
end
I save my script as odd_rms and try it on command window something like odd_rms(3) but it doesn't show any answer (Error: File: odd_rms.m Line: 2 Column: 19)
I have tried plugging random number to it specific code sqrt(mean((1:2:2n-1).^2)) and they return the right answer.
Can someone explain the error on my script?
Thanks you so much

 采纳的回答

Birdman
Birdman 2020-3-24
编辑:Birdman 2020-3-24
You forgot to put multiplication operator. Try this:
function A=odd_rms(n)
A=sqrt(mean((1:2:2*n-1).^2));
end

4 个评论

thanks you. That really help me
Hi, this morning i try it and it was succesful, in the afternoon I tried again and it say : (Function 'odd_rms' has already been declared within this scope.)
This is my function :
function orms=odd_rms(n)
A=sqrt(mean((1:2:2*n-1).^2))
end
and I try it like : odd_rms(5)
I save the file as odd_rms
You accidentally included some commands before the function declaration, leading you to accidentally have the situation of having a script named odd_rms.m that includes a function named odd_rms . When you have a script, you cannot include a function with the same name as the script.
awesome, thanks you. I get it

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更多回答(1 个)

Walter Roberson
Walter Roberson 2020-3-24

0 个投票

Your function has variable orms as output but you only assign to A.

1 个评论

function orms=odd_rms(n)
orms=sqrt(mean((1:2:2*n-1).^2))
end
Is that correct?

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