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1.=e,u=-x 2v,v=sinx.( )
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2.导数的四则运算:(uv)'u'v';;(uv)'u'vv'u;(________)'u'v2v'uv vhttps://bgk-photo.cdn.bcebos.com/d058ccbf6c81800ad852666ea13533fa828b471f.jpg
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3.(8-4-6)设 y x z = ,而 v u x + = , v u
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4.若边e=[u,v]∈E,称u、v是e的端点,也称u、v是关联的。
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5.T h e m e d i a n n e r v e a r i s e f r o m t h e ( )A . c e r v i c a l p l e x u s B . b r a c h
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6.设随机变量X与Y相互独立,且E(X)与E(Y )存在,记U = max(X, Y), V = min(X, Y ),则 E(UV ) =( ).
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7.【判断题】设 , x=u v , y=u-v ,则 。 ()
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8.﹣(u﹣v)=﹣u v( )
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9.{u,v,w}/.u→v/.v→z
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10.If U, V , and W are subspaces of R3 and if U ⊥ V and V⊥W, then U⊥W.