Explanation:
In order to prove that f is one-to-one and surjective, we can prove directly that f is bijective by findng .
To calculate the inverse of f, first we swap the variables x and y. Then we write y in values of x.
On this step it is important to separate what terms contain y and what terms do not. After that we can separate y as a factor
Thus, . Note that is well defined en every element of B, because it can be defined on any element different from 1, where the divider is zero.
An element of the form , for some x, is an element of A because it is different from -2. Lets suppose that there exist an x such as , thus 2x-1 = -2(1-x) = -2+2x, from where we conclude that 0 = -1, that is a contradiction. As a result, cant be equal to -2.
I hope this works for you!
Answer:
To the nearest hundredth, 2.85
To the nearest hundred, zero
Step-by-step explanation:
Answer:
B. 3a
Step-by-step explanation:
Answer
Yes its true
truth:
You do get receipts from video stores.
unless thats only my location
Answer:
21
Step-by-step explanation: