# Thread: Need help with proof

1. ## Re: Need help with proof

Okay so keep the claim ditch the explanation.

To construct that explicit proof could I draw a picture like that one you posted in the link with picture of the two forks that divide the grid up?

2. ## Re: Need help with proof

Originally Posted by Jay23456
To construct that explicit proof could I draw a picture like that one you posted in the link with picture of the two forks that divide the grid up?
Yes. Usually a picture shows just one example (e.g., a board of specific dimensions) and may not be as general as a real proof, but it may go a long way in conveying the idea. I am not sure you need the forks. That picture deals with a more difficult problem where the two removed squares can be anywhere. In your case they are in the corners.

3. ## Re: Need help with proof

Alright just #2 remains now

#2 This kind of reminds me of series and sequences from calc 2, not sure what it asking. Is it asking me to find what the soultions would be for any given n?

a. 1 = 1; 1 + 3 = 4; 1 + 3 + 5 = 9; 1 + 3 + 5 + 7 = 16;

b. 1 + 3 + ... + (2n + 1) = ???

c. 1 = 1; 1 + 8 = 9; 1 + 8 + 27 = 36; 1 + 8 + 27 + 64 = 100;

d. 1 + 8 + ... + n^3 = ???

4. ## Re: Need help with proof

This thread has become sufficiently complicated even with one problem. Also, I am signing off for the day. I think it would make sense to start a new thread dedicated to problem #2 so that more new people can see it.

5. ## Re: Need help with proof

Alright thanks alot for your help emakarov! +Rep

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