surely you have seen how to show that
1+2+3+...+n = n(n+1)/2
your sum is just twice that.
Using Mathematical Induction, prove the following:
a) 2+4+6+.....+2n= n(n+1)
2 answers
pls help
a) 2+4+6+.....+2n= n(n+1)
2 answers