And what's stopping you from doing the next lines? 2 is less than 10 and greater than 1, and 4 is less than ten, so you have a couple obvious points right there, and another three in the generation after that, and so on.

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Posted on 2011-10-19

The following recursive definition defines a set Z or ordered pairs

B. (2,4) is in Z.

R1. If(x,y) is in Z with x < 10 and y <10, then (x+1, y+1) is in Z.

R2. If(x,y) is in Z with x > 1 and y < 10, then(x-1, y+1) is in Z.

Plot these ordered pairs in the xy-plane

--------------------------------

I just did first line

B. (2,4) belongs to Z

B. (2,4) is in Z.

R1. If(x,y) is in Z with x < 10 and y <10, then (x+1, y+1) is in Z.

R2. If(x,y) is in Z with x > 1 and y < 10, then(x-1, y+1) is in Z.

Plot these ordered pairs in the xy-plane

--------------------------

I just did first line

B. (2,4) belongs to Z

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