设f(x，y)=et2dt，则df(x，y)=__________．

admin2019-01-29 3

问题设f(x，y)=

e^t²dt，则df(x，y)=__________．

选项

答案(2xe^(x²+y²)²+[*])dx+(2ye^(x²+y²)²—[*])dy

解析 dy(x，y)=e^(x²+y²)²d(x²+y²)—

=e^(x²+y²)²(2xdx+2ydy)—

=2xe^(x²+y²)²+

)dx+(2ye^(x²+y²)²—

)dy

转载请注明原文地址:https://jikaoti.com/ti/5wWRFFFM

考研数学二

相关试题推荐

随机试题

最新回复(0)