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Dear Aili,

For the last argument in this question, I believe the counterexample you wrote is not correct, your example is still symmetric. Would you mind correcting it?

Best,

Han

HANHONG (talk)17:57, 5 March 2018

which question?

AiliShao (talk)19:16, 5 March 2018

MATH152/April 2017/Question A 13/Solution 1.

Sorry I forgot to write it.

HANHONG (talk)23:02, 5 March 2018

OK..I have corrected it.

AiliShao (talk)23:08, 5 March 2018

Thank you.

HANHONG (talk)17:28, 7 March 2018