Random command! Returns the sum of the elements of a matrix. The cumSum( command gets the cumulative sum of each column in the matrix, adding the value of the previous element to the next element, and repeating this for each consecutive element in the column. When the cumSum( command is finished, the last element in each column will contain the sum of that column.
AIG: What does this US giant do? American International Group (AIG) is one of the world's biggest insurance firms, but it has fallen spectacularly from grace in recent months. Although it provides services to millions of people across the world, it recently announced the biggest quarterly loss in corporate history.
How vaccines work. Vaccines work by stimulating our immune system to produce antibodies (substances produced by the body to fight disease) without actually infecting us with the disease.They trigger the immune system to produce its own antibodies, as though the body has been infected with a disease. This is called active immunity.ow vaccines work. Vaccines work by stimulating our immune system to produce antibodies (substances produced by the body to fight disease) without actually infecting us with the disease.