00:01
So here we have the function, f of x, is equal to the square root of 1 plus x squared.
00:06
So for part a, we are evaluating f of negative x.
00:10
So f of negative x is plugging negative x for x, and we get the square root of 1 plus negative x squared, but negative x squared is still going to be x squared.
00:21
So therefore, f of negative x, again, this is the square root of 1 plus negative x squared, but that's going to be equal to, while the same function here, the square root of 1 plus x squared.
00:33
So f of negative x is the square root of 1 plus x squared.
00:38
And then for part b, we have f of 1 over x.
00:42
So f of 1 over x is going to be equal to the square root of 1 plus 1 over x squared is equal to the square root of 1 plus 1...