Write a function SumNthRowSquares(M,n) that returns the sum of the squares of the numbers in the nth row of matrix M. Use ‘sum’ only to sum a vector. In other words, retrieve the appropriate row and sum it.

When I type 'SumNthRowSquares(M,n)' it has an error plz help

[Stephen23]

"When I type 'SumNthRowSquares(M,n)' it has an error"

Have you written a function named SumNthRowSquares, and saved it in a file SumNthRowSquares.m somewhere on the MATLAB Search Path?

Answer 1

[JohnGalt]

I presume you want the actual function? if so, save the following to a file.

function out = SumNthRowSquares(M,n)
out = sum(M(n,:).^2));
end