 Hello and welcome to this session. It is because we are calling problem today. Truths are the greater than teacher function, x are that r goes to r given by fx is equal to greater than teacher of x is neither 1, 1, not on to where x in square brackets you know the greater than teacher less than or equal to x. Now let us write the solution. Here x in square bracket is the greatest integer function. Now f such that from r to r is given by fx is equal to greater than teacher function of x. Now let us understand the greater than teacher function first. We know greater than teacher function of 2.8 will be equal to 2 greater than teacher function of 0.08 will be equal to 0. Greater than teacher function of 4 will be equal to 4 and greater than teacher function of minus 6.4 will be equal to minus 7. Here we can see that domain, co-domain, the set of all real numbers we can take values like 2.1, 2.3 etc that is a non integral value. Now let us check for 1, 1. We observe that fx is equal to 0 for all x belongs to closed interval 0, 1. Thus f such that from r to r is not 1, 1. Now let us check for 1, 2. We observe that non integer points in r do not have their pre-images in the domain f such that from r to r does not attain non integral values. Hence f such that from r to r is not on 2. I hope you understood this problem. Bye and have a nice day.