Write a function called sum_rows
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Write a function called sum_rows that takes a matrix as input argument
(the function does not have to check the format of the input) and returns
a vector as an output argument. The elements of the vector are the
sums of the elements of the rows of the input matrix. Note that the built-in
MATLAB function sum returns the sum of the columns.
2 Kommentare
Antworten (1)
Abolfazl Chaman Motlagh
am 5 Dez. 2021
sum function get dim (dimension which summuation operate on it) as second arguments.
so just use :
sum(A,2)
a function :
function x=sum_(A)
x=sum(A,2);
end
2 Kommentare
Walter Roberson
am 5 Dez. 2021
Let us test:
A = [1 2 3; 4 5 6]
sum_(A)
function x=sum_(A)
x=sum(A,2);
end
Was a vector returned? Yes.
Does the vector equal the sum of the rows? Yes.
Is the function named sum_rows? No.
Is it reasonable to expect that volunteers will give exact solutions to homework questions? No.
Is it reasonable for a volunteer to show the technology the poster needs, assuming that the poster will adapt the ideas and use them as needed? Yes.
John D'Errico
am 5 Dez. 2021
Bearbeitet: John D'Errico
am 5 Dez. 2021
Please do not do student homework assignments for them. This does not help the student, even if they seem grateful. All the student learns is they can use Answers as a way to do their homework for them. I would point out that the poster has posted two obvious homework assignment questions. (I closed the other.) If not discouraged, they will continue to post their entire assignments.
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