# find the sum by function

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Commented: Johannes Hougaard on 12 Aug 2020
find the sum by function
Sriram Tadavarty on 29 Jul 2020
What is looked for here? Whats the output that is expected from the sample vector? Can you show the code that you tried and where you struck?

Cristian Garcia Milan on 29 Jul 2020
I think that your problem is the function definition. Actually you are using total as input and v as output and I think that your intention is the opposite. The function should be:
min(v);
mean(v);
v(min(v))=mean(v);
total=sum(v)
end
When you have these code saved, you can use:
v=[12 9 6 10 13];
how i can replace the minimum grade by the average of grades , then calculate the sum of the grades ?

Johannes Hougaard on 29 Jul 2020
[~,idx] = min(v); %finding the position of the minimum value (3 in the given example)
v(idx) = mean(v); %replacing the value (Christians code will replace the 6th element (13)
total = sum(v);
end
or you could index in another way (will be better if there are more 6'es to be replaced)
v(v == min(v)) = mean(v); % find all instances where v equals min(v) by the == operator and replace by mean(v)
total = sum(v);
end
##### 2 CommentsShowHide 1 older comment
Johannes Hougaard on 12 Aug 2020
Then you'll be able to call it from your workspace with an output with any name you like and with alterations to v (or use another variable name if desired).
v = [12 9 6 10 13];