- #1

- 9

- 0

For example,

{(x,y) belongs R2 | x squared + y squared < 1}

The textbook is talking about open balls, greatly confusing me.

- Thread starter kelp
- Start date

- #1

- 9

- 0

For example,

{(x,y) belongs R2 | x squared + y squared < 1}

The textbook is talking about open balls, greatly confusing me.

- #2

- 1,101

- 3

Hmm so I guess I gave away the answer but not really. Do you need to prove the set is open?

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