if i am having a matrix of n rows and m columns which command can be used to display the 3rd row second column value.

if i am having a matrix of n rows and m columns which command can be used to display the 3rd row second column value.

Answer 1

[Torsten]

disp(A(3,2))

Best wishes

Torsten.

[Guillaume]

Or just

A(3, 2)

without a terminating semicolon.

However, a better answer would be: why are you asking this? This is really basic matlab.

[Prabha Kumaresan]

The reason for asking this is I am having two matrix of (n,m) and I need to calculate the throughput using the expression

throughput =(Bmax.*log2(1+((V(k).*U(k))./(noise+(sum(U,1,k-1).*V(k))))))

With respect to the expression V and U are two matrices and k indicates the position of value present in the matrices.Could you please tell me how to define k with respect to the equation.

[Guillaume]

I have no idea how that relates to the original question.

As for the expression, it makes no sense. In particular, the sum function in matlab is not defined to take a third numeric argument, so sum(U, 1, k-1) is an error, whatever k is.

[Prabha Kumaresan]

sum(U, 1, k-1) denotes the summation of U with respect to lower limit 1 and upper limit k-1.If my equation was wrong could you please tell me how to rewrite the equation.

[Torsten]

sum(U(1:k-1))

Best wishes

Torsten.

[Guillaume]

Yes, as Torsten says, the proper way to write that sum is sum(U(1:k-1). Of course, that sum (and the whole expression) assume that U and V are vectors whereas you tell us you have matrix. I have no idea how you reconcile the two.