how do i input this in built in funtions

multiply and count elements

Answer 1

[Star Strider]

I’m not certain what you want, so I’ll venture this:

x=[3,7,2,9,4];

product_x = prod(x)
elements_x = length(x)
elements_x = numel(x)

produces:

product_x =

       1512

elements_x =

       5

elements_x =

       5

Answer 2

[Image Analyst]

If m is your matrix:

theProduct = prod(m(:)); % Multiply all elements together.
theCount = numel(m); % Count the number of elements in the array.