For finding the values, we look at the x - value given. Then we move to where it is on the graph and find its y value.
In part A, when x = -4, the y value looks to be between -3 and -4. Let's put it in the middle and estimate it at -3.5
In part B, when x = 1, the process is similar. Go to x = 1, then go to the graph, then go to the y value. That looks to be at y = -3.
In part C, when x = 4, there are three values that work. We are actually answering part D at this point because we can tell this graph is NOT a function of x. When you have an x -value that goes into the function, you have to get EXACTLY ONE thing that comes out. I bolded "EXACTLY ONE" because those words make the definition work. Two or more, not a function. One, it's a function. None, and it's not in the domain at all. There are three values of y that work, and they are - from top down, 3.5, 0, -2.5.
We answered Part D when observing part C. It's NOT a function because there is not EXACTLY ONE value of y for an x.
And finally, because it's not a function - finding the domain and range is a waste of time. You can't find the domain of something that's not a function - you need a function to have a domain.
Hope that helps.
1
It's whole number
So I think it's the answer
Answer:
<u><em></em></u>
<u><em></em></u>
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that the trigonometric function
we know that sin²∝ + cos²∝ = 1
⇒ sin²∝ = 1- cos²∝
Now we have to simplify the given trigonometric function
= 
= 
<u><em>Step(ii)</em></u>
we know that cosec∝ = 1/ sin∝
= 
After cancellation sine function, we get
= 
<u><em>Final answer:-</em></u>
<u><em></em></u><u><em></em></u>
Answer:
{ 1,2}
Step-by-step explanation:
The ∩ means intersection, or what is in common for the two sets
The intersection of A and B is what is in the overlapping circles
The intersection of A and B is { 1,2}
