Let A and B be nonempty sets. Prove the following statements. (a) For any function f : A → A, if f o f is onto, then f is onto. (b) For any function f : A → B, if g : B → A is a function so that g o f = IA, then f is one-to-one.

Q: How do you find part b I am confused?

A: Given data :  Numbers A set of 25 two digit numbers are listed below. 10 17 20 23 24 28 32 39 42 45…

Q: Help me answer the questions

A:

Q: (p) | (2) dz =.

A: From x=3 to x=5, there is a triangle with base= 2 and height = -3  So the area of the triangle is:…

Q: How do you know to do this?

A: or you can use Heron's Formula to find the area of the triangle.

Q: Part d not answer

A:

Q: What do I have to do ?

A: Step:-1 In given problem, dilation  is used so first we need to understand about dilation and then…

Q: Assistance pleased

A:

Q: So what's the basic variable?

A:

Q: How do I answer this ? I have to show my work.

A: Probability quantifies the chances of happening an event. The probability values always lie in the…

Q: the hang time

A:

Q: How is math connected to people and surroundings?

A: You go to the market and buy something. Now you have to pay for that. So you have to calculate how…

Q: r5 dt 25 + t2

A:

Q: How are r and r2 interpreted?

A: In this question, we have to explain how we interpret r and r2

Q: 3) Given that sin 0 : and 0 is in quadrant II, 4 %3D a) Find tan 0 b) Find sec 0

A:

Q: What is i ? Explain.

A: In complex numbers, i represents the imaginary part. The value of i is -1.   So, in case if we end…

Q: It's on image

A:

Q: help me please

A: Given  12 + 22 + 32 + ⋅ ⋅ ⋅ + n2 = n(n+1)(2n+1)6Step 1   P(1) is true             P(1) = I2 = 1   ⇒…

Q: f 3 +4 F 27/-1)dt +

A: