设函数z=ysin(xy)+(1-y)arctanx+e<sup>-2y</sup>,则<img src='https://img2.soutiyun.com/latex/latex.action' />=( )

A.<img src='https://img2.soutiyun.com/latex/latex.action' />B.<img src='https://img2.soutiyun.com/latex/latex.action' />C.<img src='https://img2.soutiyun.com/latex/latex.action' />D.0

时间:2023-01-20 04:48:40

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