Practical Work

Using Jupyter Notebook, develop an object$-$oriented application that will perform calculations on rational

numbers. While you are responsible for the application's final design, your application is expected to contain a

class called ratNum representing a rational number $(\frac{a}{b}),$ where a and $b$ are both integers. You may assume that

$b$ is positive for simplicity, and the application does not need to check this. However, if the value of $b$ is zero, an

error message should be displayed to alert the user that it is not allowed. Within the class, you must write public

member function$($s$)$ to realize one of the following five tasks. The task to do should be determined by the

remainder obtained from dividing your team number by $5.$ For example, if your team number is SEVEN, $7\%5=$

$2,$ and you should do Task $2)$ of this assignment.