I need to show that (n^5)/5 + (n^3)/3 + 7n/15 is an integer for all n.(adsbygoogle = window.adsbygoogle || []).push({});

I tried induction that obviously work for 1 but i could not manage to show this for k+1. Any tips please?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Induction proof help

**Physics Forums | Science Articles, Homework Help, Discussion**