00:01
All right, so first let me, let's write the function f composed with function g of x, and then we're going to write function g composed with function f.
00:13
Now, when we do that, basically what we're doing is setting the function to the right, the most right, as a new independent variable to the function to right adjacent to the left of it.
00:26
So therefore, instead of function f being square root of x plus one, we're going to substitute 1 over x, which is the function g into x for function f.
00:39
So then when we do this, we're going to get 1 over x plus 1.
00:45
It's 1 over x being the function g.
00:48
On the other hand, for g composed with function f, we are going to substitute square word of x plus 1 into x in function g.
00:56
Therefore, instead of 1 over x, we're going to get 1 over square root of x plus 1...