Question

For a and b relatively prime, prove that the largest k for which ax + by...

For a and b relatively prime, prove that the largest k for which ax + by = k with x and y non-negative integers has no solution is k = ab - a - b.

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
Prove that n is prime iff every linear equation ax ≡ b mod n, with a...
Prove that n is prime iff every linear equation ax ≡ b mod n, with a ≠ 0 mod n, has a unique solution x mod n.
Prove the following statements: 1- If m and n are relatively prime, then for any x...
Prove the following statements: 1- If m and n are relatively prime, then for any x belongs, Z there are integers a; b such that x = am + bn 2- For every n belongs N, the number (n^3 + 2) is not divisible by 4.
Prove that n − 1 and 2n − 1 are relatively prime, for all integers n...
Prove that n − 1 and 2n − 1 are relatively prime, for all integers n > 1.
Prove: For all positive integers n, the numbers 7n+ 5 and 7n+ 12 are relatively prime.
Prove: For all positive integers n, the numbers 7n+ 5 and 7n+ 12 are relatively prime.
The greatest common divisor c, of a and b, denoted as c = gcd(a, b), is...
The greatest common divisor c, of a and b, denoted as c = gcd(a, b), is the largest number that divides both a and b. One way to write c is as a linear combination of a and b. Then c is the smallest natural number such that c = ax+by for x, y ∈ N. We say that a and b are relatively prime iff gcd(a, b) = 1. Prove that a and n are relatively prime if and...
Prove that for a square n ×n matrix A, Ax = b (1) has one and...
Prove that for a square n ×n matrix A, Ax = b (1) has one and only one solution if and only if A is invertible; i.e., that there exists a matrix n ×n matrix B such that AB = I = B A. NOTE 01: The statement or theorem is of the form P iff Q, where P is the statement “Equation (1) has a unique solution” and Q is the statement “The matrix A is invertible”. This means...
prove that for all non-negative integers k, k5-k is divisible by 10
prove that for all non-negative integers k, k5-k is divisible by 10
Let b be a primitive root for the odd prime p. Prove that b^k is a...
Let b be a primitive root for the odd prime p. Prove that b^k is a primitive root for p if and only if gcd(k, p − 1) = 1.
Prove that for positive integers a and b, gcd(a,b)lcm(a,b) = ab. There are nice proofs that...
Prove that for positive integers a and b, gcd(a,b)lcm(a,b) = ab. There are nice proofs that do not use the prime factorizations of a and b.
Assume a, b ∈ Z and p is prime. Using B´ezout’s identity, prove that if p...
Assume a, b ∈ Z and p is prime. Using B´ezout’s identity, prove that if p | ab, then p | a or p | b.