1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vlada-n [284]
3 years ago
6

Determine whether each of these functions from {a,b,c,d} to itself is one-to-one. a) f(a) = b, f(b) = a, f(c) = c, f(d) = d. b)

f(a) = b, f(b) = b, f(c)=d, f(d) = c. c) f(a) = d, f(b) = b, f(c)=c, f(d) = d.
Mathematics
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

The first one is one-to-one.

The second one is not one-to-one.

Third one is not one-to-one.

The problem:

Are the following one-to-one from {a,b,c,d} to {a,b,c,d}:

a)

f(a)=b

f(b)=a

f(c)=c

f(d)=d

b)

f(a)=b

f(b)=b

f(c)=d

f(d)=c

c)

f(a)=d

f(b)=b

f(c)=c

f(d)=d

Step-by-step explanation:

One-to-one means that a y cannot be hit more than once, but all the y's from the range must be hit.

So the first one is one-to-one because:

f(a)=b

f(b)=a

f(c)=c

f(d)=d

All the elements that got hit are in {a,b,c,d} and all of them were hit.

The second one is not one-to-one.

The reason is because f(a) and f(b) both are b.

Third one is not one-to-one.

The reason is because f(a) and f(d) are both d.

You might be interested in
Can someone Solve: 2x^2/3 = 8
Naddika [18.5K]

Isolate the variable by dividing each side by factors that don't contain the variable.

x = 2 √ 3 , − 2 √ 3

8 0
3 years ago
Write and solve a problem for 42 divided 7 in which the quotient is the number of groups
Verdich [7]

Answer:

6

Step-by-step explanation:

4 0
3 years ago
Vicky did a survey to answer the following question: What is the average fitness score of grade 8 students? The mean fitness sco
mario62 [17]
The mean is calculated by adding up all of the data points and then dividing the sum by the amount of points added.

The mean fitness score was 3.2 points.  If all of the students scored the same thing (3.2 points) then this would be the fitness score of each student.

Thus, the answer is D. 3.2 points.
3 0
3 years ago
Which of the ratios below is equivalent to 4:3? Select all that apply.
ruslelena [56]

Answer:

A, B, and D good luck

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Brainly do ur magic pls.?
jok3333 [9.3K]

1. 3y

multiplying 3 and y together gets 3y

2. y-5

5 less implies that we subtract 5 from y

3. y+7

adding 7 to y, self-explanatory

4. 9y

same thing as #1

5. \frac{y}{8}

quotient of implies division, since number y is listed first, y is the numerator

8 0
3 years ago
Other questions:
  • Find the 50th term sequence 5 , -2 , -9 , -16
    6·2 answers
  • Which of these equations is correct? select all that apply
    8·1 answer
  • Please hurry I need this soon and no links
    8·1 answer
  • WILL GIVE BRAINLIEST!
    5·1 answer
  • How would you find the following shapes volume?
    8·2 answers
  • The two photos are both for the same question please help I dont know how to solve the revered graph
    6·1 answer
  • Question 1) In an auditorium, there are 22 seats in the first row and 28 seats in the second row. The number of seats in a row c
    7·1 answer
  • Violet finds some nickels and pennies under the couch cushions. How much money (in dollars) does she have if she has 140 nickels
    11·1 answer
  • A definition of a statistical question is given below.
    6·2 answers
  • $240 interest is earned on a principal of $1500 at a simple interest rate of 4% interest per year. For how many years was the pr
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!