大一电路分析问题1-12

AttackArt2022-10-04 11:39:541条回答

大一电路分析问题1-12

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2
设u=x^2,v=xy
所以u'x=2x,u'y=0,v'x=y,v'y=x
z'x=(f'u)(u'x)+(f'v)(v'x)=2xf'u+yf'v
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=f'v+2x^2f''uv+xyf''vv

1
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3
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