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已知函数f(xy,x+y)=x2+y2+xy,则分别为[ ].A.-1,2yB.2y,-1C.2x+2y,2y+xD.2y,2x
已知函数f(xy,x+y)=x2+y2+xy,则
分别为[ ].
A.-1,2y
B.2y,-1
C.2x+2y,2y+x
D.2y,2x
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已知函数f(xy,x+y)=x2+y2+xy,则
分别为[ ].
A.-1,2y
B.2y,-1
C.2x+2y,2y+x
D.2y,2x
A.(xy)=f(x)f(y)
B.(xy)=f(x)+f(y)
C.(x+y)=f(x)f(y)
D.(x+y)=f(x)+f(y)
高等数学复旦大学出版第三版下册课后习题答案习题八
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