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设z=e^x³+y³，则dz=()

高老师2年前 (2024-03-26)高等数学（工本）(00023)15

设z=e^x³+y³，则dz=()

A.3e^x³+y³(dx+dy)

B.3e^x³+y³(xdx+ydy)

C.3e^x³+y³+(y²dx+x²dy)．

D.3e^x³+y³(x²dx+y²dy)

正确答案是D

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