Mathematics
Undergraduate
途中式込みで教えてほしいです！
[6 チェインルールを用いて
(1)z=xy, u=x+2y, v=x-yのときの
(2)z=r-0(r>0,
0z
をu,vの式で表せ、
du'dv
T
<0
,x=rcos@,y=r sin 0 のときの zxいこyをr,0の式で表せ、
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