- #1
Lococard
- 25
- 0
Homework Statement
Use mathematical induction to prove, for all integers [itex]n >= 1[/itex]
[itex]n^3 - n[/itex] is divisible by 3
Homework Equations
Found equations with addition but no subtract involved.
The Attempt at a Solution
Another question suggests you expand the brackets, then insert the original theorem which prooves that the whole statement is true? (divisible by 3)