若函数https://bgk-photo.cdn.bcebos.com/7a899e510fb30f24992b2563d895d143ad4b0319.jpg在点https://bgk-photo.cdn.bcebos.com/a50f4bfbfbedab64ebc384a0e736afc379311e19.jpg处存在偏导数则函数在该点可微。( )
若函数https://bgk-photo.cdn.bcebos.com/7a899e510fb30f24992b2563d895d143ad4b0319.jpg在点https://bgk-photo.cdn.bcebos.com/a50f4bfbfbedab64ebc384a0e736afc379311e19.jpg处存在偏导数则函数在该点可微。( )
发布时间：2025-10-05 13:20:30
