单选题 1分

设z=xcosy-2yex+2x,则



分别为( )。

  • A.C.osy+2yex+2xln2,xsiny-ex
  • B.C.osy-2yex-2xln2,xsiny+2ex
  • C.C.osy-2yex+2xln2,-xsiny-2ex
  • D.siny-2yex+2xln2,C.osy-2ex

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