Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/22 09:59:42
Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σ

Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.
Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.

Z=u的v次方,U=3x+2y,V=xy,求σz/σx.σz/σy.
dz/dx=dz/du*du/dx+dz/dv*dv/dx=3v/u*u^v+yu^vlnu
dz/dy一样的算法=3v/u*u^v+xu^vlnu

σz/σx=(σz/σu)*(σu/σx)+(σz/σv)*(σv/σx)
=3v*(u的v-1次方)+(u的v次方)*y
σz/σy=(σz/σu)*(σu/σy)+(σz/σv)*(σv/σy)
=2*(u的v-1次方)+(u的v次方)*x