The document describes a Matlab coding problem where the value of Y is calculated based on one of two equations depending on the value of x. For x between 0 and a, Y is defined by equation 1, and for x between a and b, Y is defined by equation 2. The code needs to use for, if, else functions to calculate the total value of Y from x=0 to x=b, where x is incremented by 0.01 each time.