• 2022-06-12
    设曲面[tex=0.786x1.0]M/b3Tm4TfVvVYa87wz/CuQ==[/tex]有连续的单位法向量场[tex=1.0x1.0]4bldDqQHSNAmYHWBtCYuvw==[/tex],[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]是一个常向量.证明:[tex=7.0x2.643]QYjJxgCzPNtCE1TriyBgkjFF7ye8rlRNqlOtbv29yW25t5QvXh7K8VfOAWy6DF9Gn8WK3TxvOssGF+esdht8xIUkEgFR08IahLwAeKxdJL4=[/tex][tex=4.643x2.786]hr7h2rEMM5k2aZEqdUvUUzsw7fS5DOBIQDzJE6XBpFsfN1+Cb9BgIkQU1fIKvmvMJGoMJv4KstflPVtcW1Q6Lvay9OPw4Mwle41let6mqkA=[/tex].