Select the correct answer. What is the postcondition of an expression or variable?
a. the condition of the expression before you execute a control structure
B. the value of the expression when you increment a variable
c. the value of the expression when you decrement a variable
d. the condition of the expression once you exit a control structure
e. the condition of the expression while running a control structure

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.