设[tex=0.786x1.286]yokTf2U2Z7kNGUXMm22GjQ==[/tex]为幂级数[tex=3.714x2.714]iIqHY70mW7wvbJoOpm3ednYsWMMiveCXwAhk08PQ5Yc=[/tex]的收敛半径,[tex=0.5x1.286]/r3Eij8VRNC5JxYjlQuXEQ==[/tex]是实数,则 未知类型:{'options': ['当[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]发散时,[tex=3.071x1.286]ju9gsDPcNd5cRUNaiWqj/A==[/tex]', '当[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]收敛时,[tex=3.071x1.286]SW+nWH6DqGGx/x5RZj63Ow==[/tex]', '当[tex=3.071x1.286]ju9gsDPcNd5cRUNaiWqj/A==[/tex]时,[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]发散', '当[tex=3.071x1.286]SW+nWH6DqGGx/x5RZj63Ow==[/tex]时,[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]收敛'], 'type': 102}
设[tex=0.786x1.286]yokTf2U2Z7kNGUXMm22GjQ==[/tex]为幂级数[tex=3.714x2.714]iIqHY70mW7wvbJoOpm3ednYsWMMiveCXwAhk08PQ5Yc=[/tex]的收敛半径,[tex=0.5x1.286]/r3Eij8VRNC5JxYjlQuXEQ==[/tex]是实数,则 未知类型:{'options': ['当[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]发散时,[tex=3.071x1.286]ju9gsDPcNd5cRUNaiWqj/A==[/tex]', '当[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]收敛时,[tex=3.071x1.286]SW+nWH6DqGGx/x5RZj63Ow==[/tex]', '当[tex=3.071x1.286]ju9gsDPcNd5cRUNaiWqj/A==[/tex]时,[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]发散', '当[tex=3.071x1.286]SW+nWH6DqGGx/x5RZj63Ow==[/tex]时,[tex=4.429x2.714]iIqHY70mW7wvbJoOpm3edkBxZX9wWZEfkvydQB8lbg0HC99Yaxi6WWPqLSiJ5GNL[/tex]收敛'], 'type': 102}
指出下列函数全部奇点的类型,若是极点,指出是几级极点:[tex=4.429x2.714]xTonY62cG4i6417VVoMKpvU7tk8HotQzJepDT1w5PnY=[/tex].
指出下列函数全部奇点的类型,若是极点,指出是几级极点:[tex=4.429x2.714]xTonY62cG4i6417VVoMKpvU7tk8HotQzJepDT1w5PnY=[/tex].
钻石的密度、折射率、色散率分别是() A: 3.52;2.417;0.044 B: 3.25;0.044;2.417 C: 3.52;2.147;0.044 D: 3.52;2.714;0.044
钻石的密度、折射率、色散率分别是() A: 3.52;2.417;0.044 B: 3.25;0.044;2.417 C: 3.52;2.147;0.044 D: 3.52;2.714;0.044
下列变量组()是一个闭回路。 A: {x,x,x,x,x,x} B: {x,x,x,x,x} C: {x,x,x,x,x,x} D: {x,x,x,x,x,x}
下列变量组()是一个闭回路。 A: {x,x,x,x,x,x} B: {x,x,x,x,x} C: {x,x,x,x,x,x} D: {x,x,x,x,x,x}
以下谓词蕴含式正确的是(): (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)
以下谓词蕴含式正确的是(): (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)
以下谓词蕴含式正确的是(): (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)
以下谓词蕴含式正确的是(): (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)
下列式中错误的是: A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)
下列式中错误的是: A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)
判断下列推证是否正确。 (∀x)(A(x)→B(x))⇔(∀x)(¬A(x)∨B(x)) ⇔(∀x)¬( A(x)∧¬B(x) ) ⇔¬(∃x) ( A(x)∧¬B(x) ) ⇔¬( (∃x)A(x)∧(∃x)¬B(x) ) ⇔¬(∃x)A(x)∨¬(∃x)¬B(x) ⇔¬(∃x)A(x)∨(∀x)B(x) ⇔(∃x)A(x)→(∀x)B(x)
判断下列推证是否正确。 (∀x)(A(x)→B(x))⇔(∀x)(¬A(x)∨B(x)) ⇔(∀x)¬( A(x)∧¬B(x) ) ⇔¬(∃x) ( A(x)∧¬B(x) ) ⇔¬( (∃x)A(x)∧(∃x)¬B(x) ) ⇔¬(∃x)A(x)∨¬(∃x)¬B(x) ⇔¬(∃x)A(x)∨(∀x)B(x) ⇔(∃x)A(x)→(∀x)B(x)
以下谓词公式中,( )不是逻辑有效式。 A: ($x)(P(x)∧Q(x)) Þ ($x) P(x)∧($x) Q(x) B: ("x)(P(x)∧Q(x)) Þ ("x) P(x)∧("x) Q(x) C: ($x)(P(x)∧Q(x)) Û ($x) P(x)∧($x) Q(x) D: ("x)(P(x)∧Q(x)) Û ("x) P(x)∧("x) Q(x)
以下谓词公式中,( )不是逻辑有效式。 A: ($x)(P(x)∧Q(x)) Þ ($x) P(x)∧($x) Q(x) B: ("x)(P(x)∧Q(x)) Þ ("x) P(x)∧("x) Q(x) C: ($x)(P(x)∧Q(x)) Û ($x) P(x)∧($x) Q(x) D: ("x)(P(x)∧Q(x)) Û ("x) P(x)∧("x) Q(x)
以下谓词公式中,( )不是逻辑有效式。 A: ($x) P(x)∨($x) Q(x) Þ ($x)(P(x)∨Q(x)) B: ("x) P(x)∨("x) Q(x) Þ ("x)(P(x)∨Q(x)) C: ($x) P(x)∨($x) Q(x) Û ($x)(P(x)∨Q(x)) D: ("x) P(x)∨("x) Q(x) Û ("x)(P(x)∨Q(x))
以下谓词公式中,( )不是逻辑有效式。 A: ($x) P(x)∨($x) Q(x) Þ ($x)(P(x)∨Q(x)) B: ("x) P(x)∨("x) Q(x) Þ ("x)(P(x)∨Q(x)) C: ($x) P(x)∨($x) Q(x) Û ($x)(P(x)∨Q(x)) D: ("x) P(x)∨("x) Q(x) Û ("x)(P(x)∨Q(x))