Recent content by Pandaren

Kinetic energy is not conserved in an inelastic collusion because energy has lost do to non conservative forces, such as friction, or the object to changes shape

In this case you elimanate the varible v, although you could ralate momentum and energy this way, but the elimanation of the varible v causes lurking varibles. So its best to only relate energy and momentum when you have an elastic collusion, or Kinetic Energy is conserved

There are 1001 student at a certain school. Prove that at least one of them must have an even number of friends among the other 1000 students. (You should assume that friendship is symmetric so that if A is a friend of B, then B is a friend of A.) Can anyone help me on this problem? Thanks...

Let a, b, c and d be 4 distinct integers. Find the smallest possible value for 4(a^2 + b^2 + c^2 + d^2) - (a+b+c+d)^2 and prove that your answer is correct. I got 20 as the smallest answer. Thats when u have a, b, c, and d as 4 consective integers, but i can't prove my answer. Can anyone...

Fibonacci numbers are the sequence 1,1,2,3,5,18,13,21... where after the initial two 1's, each number in the sequence is the sum of the previous two. Prove that there is no postive integer m such that the sum of every m consecutive Fibonacci numbers is odd. Can anyone explain to me what's the...

Ohh I understand now thanks for your help

you mean if 2 is a prime, then 2 = x, 2^2 = x^2 Then 2^2 = (v + 1)(v^2 - v + 1) Or 2 * 2 = (v + 1)(v^2 - v + 1) Therefore 2 = v + 1 and 2 = v^2 - v + 1?

The only x that seem to work is x = 2

I don't understand the "all factors of x" part you mean (x - 1)(x + 1) = v^3 ?

After I factored the right side, i got x^2 = (v + 1)(v^2 - v + 1) I don't see what to do next :frown: Thank you for your help :smile:

Hey everyone, I need help on this problem: Find all prime numbers x such that x^2 = v^3 + 1 for some integer v. Thanks a lot for your help, i appreciated.