00:01
In this question we have given two functions and we have to find inverse of this two functions.
00:08
So in part a, the function is given as f of x is equal to 5x minus 15 where f of x is equal to y.
00:26
This we have given and we have to find f inverse of y.
00:32
So let y is equal to f of x minus 15 because we have given f of x is equal to y.
00:40
So it implies 5x is equal to y plus 15.
00:48
So it implies x is equals to y plus 15 divided by.
00:54
So this implies x is equals to y divided by 5 plus 3.
01:07
This can be written as f inverse of y that is equals to y divided by 5 plus 3.
01:16
This we can write because we know that f of x is equal to y.
01:23
This we have to give.
01:24
This we have given.
01:25
So x is equals to f inverse of y.
01:30
So i have replaced x by f inverse of y...