Answer:
Let f be a function
a) f(n) = n²
b) f(n) = n/2
c) f(n) = 0
Explanation:
a) f(n) = n²
This function is one-to-one function because the square of two different or distinct natural numbers cannot be equal.
Let a and b are two elements both belong to N i.e. a ∈ N and b ∈ N. Then:
f(a) = f(b) ⇒ a² = b² ⇒ a = b
The function f(n)= n² is not an onto function because not every natural number is a square of a natural number. This means that there is no other natural number that can be squared to result in that natural number. For example 2 is a natural numbers but not a perfect square and also 24 is a natural number but not a perfect square.
b) f(n) = n/2
The above function example is an onto function because every natural number, lets say n is a natural number that belongs to N, is the image of 2n. For example:
f(2n) = [2n/2] = n
The above function is not one-to-one function because there are certain different natural numbers that have the same value or image. For example:
When the value of n=1, then
n/2 = [1/2] = [0.5] = 1
When the value of n=2 then
n/2 = [2/2] = [1] = 1
c) f(n) = 0
The above function is neither one-to-one nor onto. In order to depict that a function is not one-to-one there should be two elements in N having same image and the above example is not one to one because every integer has the same image. The above function example is also not an onto function because every positive integer is not an image of any natural number.
Answer:
Forward.
Explanation:
E-mail is an acronym for electronic mail and it can be defined as a set of written words, texts, characters used for conveying a message from one person to another. It is a channel or medium of communication between one person and the other.
Forward simply sends a copy of the message and any additional comments to a different e-mail address. The term forward is used in email to describe the process of sending a message.
This happened to me a while back. If you can’t find a contact to admin try emailing one of your teachers. My teacher told admin and then they fixed it.
In physics, work (Joule) is defined as force (Newton) times displacement (meter).
W = F * s
In chemistry, the equation is:
work = pressure x (change in volume)
In electrical work, the equation is:
work = charge x (change in voltage)
