One of the founders of your company has had their sibling testing the latest incarnation of the web site. The sibling is upset at having to re-enter their username and password before accessing the shopping cart or checking out. The sibling wants to be able to only type in the username and password once, check a "remember me" box, and have the site remember that information. Explain to the founder and their sibling why the security team has chosen to have users reauthenticate.

In a heat transfer course, we can derive the equation for the temperature distribution in a flat rectangular plate. in this example, we will look at a plate at steadystate with three sides being held at t1, and one side held at t2. the temperature for any location on the plate, t(x,y), can be calculated by where create a function (prob3_5) that will take inputs of vectors x and y in feet, scalar n, scalars l and w in feet and scalars t1 and t2 in degrees fahrenheit. it will output a matrix t which is the temperature of each x and y locations. t will have the number of columns equal to the number of elements in x and rows equal to the number of elements in y. though this can be done without loops (perhaps more efficiently), your program must use a nested loop.