Explanation:
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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, let’s 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:
The correct answer to the following question will be Option C (Firewall monitoring).
Explanation:
Firewall monitoring would be the analysis of essential firewall parameters that play a key role throughout the effective operation of firewalls.
Usually, management of the firewalls should include:
- Monitoring the firewall file.
- Management of the firewall statute.
- Monitoring the design of the firewall.
Firewall security control is shown if the user uses Wire-shark to track relevant incoming and outgoing traffic.
Therefore, Option C is the right answer.
A central message that’s communicated by a writer or speaker is called a main idea
The output is The string answer = "five times" All strings start at index 0 and end at the length of the string minus 1.
<h3>What is output?</h3>
Other answer are:
Then count rightly, index 2 is v and index 7 is m answer[2:7] goes from v to m including v but not m, So, answer[2:7] = "ve ti".
Output is said to be the act of making something out of another thing.
Note that the output is The string answer = "five times" All strings start at index 0 and end at the length of the string minus 1. Then count rightly, index 2 is v and index 7 is m answer[2:7] goes from v to m including v but not m, So, answer[2:7] = "ve ti".
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