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1.  Èç¹û 0<a<1, ÄÇôÔÚÇøÓò [0,a] x [0,a]ÉÏ, ÓÐ |x^n +y^n-1| --> 1, µ±nÇ÷ÓÚÎÞÇî, ´Ó¶ø¶þÖØ»ý·ÖÇ÷ÓÚ ÇøÓòÃæ»ý=a^2.

2. ÔÚÇøÓò[0,1] x [0,1] \ [0,a] x [0,a] ÉÏ, ÓÐ|x^n +y^n-1| < 1, ´Ó¶ø¶þÖØ»ý·ÖСÓÚ ÇøÓòÃæ»ý= 1-a^2.

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