00:01
Hi there.
00:02
Let's start off solving this question by finding the domain of the function g of x.
00:08
So this is a fraction, so the denominator cannot be zero.
00:12
That means if 5x plus 9 is equal to 0, we got x is equal to negative 9 over 5.
00:18
That means x cannot be this value.
00:20
So the domain of the function for g of x, which is all real numbers except negative 9 over 5, and that goes to the range.
00:32
So for the range of the function, we have to find the inverse of this function.
00:37
So for the inverse of the function, let's say g of x is equal to y.
00:41
So g of x is equal to y.
00:43
That is equal to 9x minus 1 over 5x minus 9.
00:48
So the inverse of the function, what we have to do, this is 5x plus 9 here.
00:54
So if i just do the cross multiplication, we need to just leave x alone.
00:58
So first of all, do cross multiplication, which is 5xy plus 9y, which is equal to 9x minus 1.
01:06
Let's move x values to the one side and the y values to the other side...