Show that for any n e N, the numbers of positive divisors of n2 is odd.
Problem 2. Find (with proof) all positive integers n that have an odd number of positive divisors (for example 6 has 4 positive divisors 1,2,3,6).
DEFINITION: For a positive integer n, τ(n) is the number of positive divisors of n and σ(n) is the sum of those divisors. 4. The goal of this problem is to prove the inequality in part (b), that o(1)+(2)+...+on) < nº for each positive integer n. The first part is a stepping-stone for that. (a) (10 points.) Fix positive integers n and k with 1 <ksn. (i) For which integers i with 1 <i<n is k a term in the...
for each positive integer m, let v(m) denote the number of divisors of m. define the function F(n) =∑ v (d) dIn where the sum is over all positive divisors d of n prove that function F(n) is multiplicative
7. For any numbers a and b and an even natural number n, show that the following equation has at most two solutions: x" + ax +b=0, x in R. Is this true if n is odd?
Write a Python program to print all Perfect numbers between 1 to n. (Use any loop you want) Perfect number is a positive integer which is equal to the sum of its proper positive divisors. Proper divisors of 6 are 1, 2, 3. Sum of its proper divisors = 1 + 2 + 3 = 6. Hence 6 is a perfect number. *** proper divisor means the remainder will be 0 when divided by that number. Sample Input: n =...
(5) Show that if t,... ., are positive numbers such that ty+..+tn-1 and .. n E (0,1/2], then n. First check that the function f(x) In (1-)-n(x) is convex on the interval (0, 1/2). The inequality is due to Ky Fan.] (5) Show that if t,... ., are positive numbers such that ty+..+tn-1 and .. n E (0,1/2], then n. First check that the function f(x) In (1-)-n(x) is convex on the interval (0, 1/2). The inequality is due to...
We write R+ for the set of positive real numbers. For any positive real number e, we write (-6, 6) = {x a real number : -e < x <e}. Prove that the intersection of all such intervals is the set containing zero, n (-e, e) = {0} EER+
We write R+ for the set of positive real numbers. For any positive real number e, we write (-6, 6) = {x a real number : -e < x <e}. Prove that the intersection of all such intervals is the set containing zero, n (-e, e) = {0} EER+
6. Let n be any positive integer which n = pq for distinct odd primes p. q for each i, jE{p, q} Let a be an integer with gcd(n, a) 1 which a 1 (modj) Determine r such that a(n) (mod n) and prove your answer.
Please answer all!! 3. Show that if n e Z so that n is odd then 8|n2 + (n + 6)2 +6. 4. (a) Let a, b, and n be integers so that n > 2. Define: а is congruent to b mod n. The notation here is a = b (modn). (b) Is 12 = 4 (mod 2)? Explain. (c) Is 25 = 3 (mod 2)? Explain. (d) Is 27 = 13 (mod8)? Explain. (e) Find 6 integers x...