00:04
And this problem we are given a graph of a function f.
00:08
With this graph, we want to answer the following questions.
00:10
First, we want to find domain and the range of our function.
00:13
So the domain corresponds to values of x for which our function is defined on.
00:17
So here we see that our functions define for any values of x, as long as x ranges between 1, excuse me, minus 1, and 8 exclusively.
00:28
Why is 8 included? because we have an open circle right here.
00:33
About the range now.
00:33
So the range corresponds to output y values that our function can have, depending on the input of x.
00:46
So we see that at the lowest, f is equal to 1.
00:54
At the highest, x is equal to 4.
01:06
So our range of f corresponds to any values of f within 1 and 4.
01:15
Now i want to find f of minus 1, so let's look at x equal to my.
01:18
Minus 1, we see that f is equal to 2.
01:21
1 x is equal to 1, f is equal to 1.
01:24
1 x is equal to 2, f is equal to 2, 1 x is equal to 4, f is equal to 2.
01:35
1 2, 1 x is equal to 5, we see that f is equal to 3.
01:39
1 x is equal to 6, f is equal to 2 again.
01:43
When f is equal to 7, x is equal to, excuse me the opposite.
01:46
When x is equal to 7, f is equal to 2.
01:52
But when f is equal to 8, f is no longer defined.
02:04
Now i want to divide the following limits...