设z=xcosy-2yex+2x,则分别为( ),

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问题 设z=xcosy-2yex+2x,则分别为(    ),

选项 A、cosy+2yex+2xln2,xsiny-ex
B、cosy-2yex-2xln2,xsiny+2ex
C、cosy-2yex+2xln2,xsiny-2ex
D、siny-2yex+2xln2,xcosy-2ex

答案C

解析 利用偏导公式即可得解
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