Question

Write a formal proof to prove the following conjecture to be true or false. If the...

Write a formal proof to prove the following conjecture to be true or false.

If the statement is true, write a formal proof of it. If the statement is false, provide a counterexample and a slightly modified statement that is true and write a formal proof of your new statement.

Conjecture: There does not exist a pair of integers m and n such that m^2 - 4n = 2.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Determine if each of the following statements is true or false. If a statement is true,...
Determine if each of the following statements is true or false. If a statement is true, then write a formal proof of that statement, and if it is false, then provide a counterexample that shows its false. 1) For each integer a there exists an integer n such that a divides (8n +7) and a divides (4n+1), then a divides 5. 2)For each integer n if n is odd, then 8 divides (n4+4n2+11).
Determine if the following statements are true or false. In either case, provide a formal proof...
Determine if the following statements are true or false. In either case, provide a formal proof using the definitions of the big-O, big-Omega, and big-Theta notations. For instance, to formally prove that f (n) ∈ O(g(n)) or f (n) ∉ O(g(n)), we need to demonstrate the existence of a constant c and a sufficient large n0 such that f (n) ≤ c g(n) for all n ≥ n0, or showing that there are no such values. a) [1 mark] 10000n2...
1. For each statement that is true, give a proof and for each false statement, give...
1. For each statement that is true, give a proof and for each false statement, give a counterexample     (a) For all natural numbers n, n2 +n + 17 is prime.     (b) p Þ q and ~ p Þ ~ q are NOT logically equivalent.     (c) For every real number x ³ 1, x2£ x3.     (d) No rational number x satisfies x^4+ 1/x -(x+1)^(1/2)=0.     (e) There do not exist irrational numbers x and y such that...
Write a formal proof where you define a function to prove that the sets 3Z and...
Write a formal proof where you define a function to prove that the sets 3Z and 6Z have the same cardinality, meaning |3 Z| = |6 Z|. 3Z = {..., −3, 0, 3, 6, 9, ...} and 6Z = {..., −6, 0, 6, 12, 18, ...} Z = integers
For each of the following statements: if the statement is true, then give a proof; if...
For each of the following statements: if the statement is true, then give a proof; if the statement is false, then write out the negation and prove that. For all sets A;B and C, if B n A = C n A, then B = C.
4. Let f be a function with domain R. Is each of the following claims true...
4. Let f be a function with domain R. Is each of the following claims true or false? If it is false, show it with a counterexample. If it is true, prove it directly from the FORMAL DEFINITION of a limit. (a) IF limx→∞ f(x) = ∞ THEN limx→∞ sin (f(x))  does not exist. (b) IF f(−1) = 0 and f(1) = 2 THEN limx→∞ f(sin(x)) does not exist.
1. Write a proof for all non-zero integers x and y, if there exist integers n...
1. Write a proof for all non-zero integers x and y, if there exist integers n and m such that xn + ym = 1, then gcd(x, y) = 1. 2. Write a proof for all non-zero integers x and y, gcd(x, y) = 1 if and only if gcd(x, y2) = 1.
Prove or disprove the following statements. Remember to disprove a statement you have to show that...
Prove or disprove the following statements. Remember to disprove a statement you have to show that the statement is false. Equivalently, you can prove that the negation of the statement is true. Clearly state it, if a statement is True or False. In your proof, you can use ”obvious facts” and simple theorems that we have proved previously in lecture. (a) For all real numbers x and y, “if x and y are irrational, then x+y is irrational”. (b) For...
write the following sentences as quantified logical statements, using the universal and existential quantifiers, and defining...
write the following sentences as quantified logical statements, using the universal and existential quantifiers, and defining predicates as needed. Second, write the negations of each of these statements in the same way. Finally, choose one of these statements to prove. If it is true, prove it, and if it is false, prove its negation. Your proof need not use symbols, but can be a simple explanation in plain English. 1. If m and n are positive integers and mn is...
Discrete math problem! Prove or disprove the following statement: “If two rectangles have the same area...
Discrete math problem! Prove or disprove the following statement: “If two rectangles have the same area and the same perimeter, then they have the same dimensions (length, width).” Note that finding a pair of rectangles that meet the criteria and showing that their dimensions are the same is an example, not a proof. If you feel that the statement is false, then demonstrate it by showing that it leads to a contradiction, or by finding a counterexample.