I've spent quite a bit of time on this, playing around with it, but can't seem to make any head-way. If anyone can give any hints or tips at all i'd be rather grateful.
I've spent quite a bit of time on this, playing around with it, but can't seem to make any head-way. If anyone can give any hints or tips at all i'd be rather grateful.
-Dave
For n = 1 we get:
Left side:
Right side: ...check.
Assume now the claim's true for n and let's try to show for n+1:
.
Well, now with a little (very little, indeed) algebra check that the rightmost side equals the formula with n+1 instead n, and we're done.