Proofs

Question 1

Odd number formula

Answer 1

(2k+1) or (2k-1)

Question 2

Rational Numbers formula

Answer 2

m/n

Question 3

A multiple formula

Answer 3

b = ka

Question 4

How to prove something by contradiction?

Answer 4

1. Assume this conjecture is false
2. Follow the steps of a direct proof based on this assumption until we obtain something that contradicts the assumption we just made.
3. Indicate the contradiction by writing ‘contradiction’
4. Write a conclusion communicating that the assumption.

Question 5

What does anything multiplied by 2 mean?

Answer 5

its even.

Question 6

How to prove by contrapositive?

Answer 6

1. Switch the language. A=B is not Not A = Not B

2. Prove this statement