设[tex=0.5x1.214]0K9Xf7VHWdVeOrSYAKIm6Q==[/tex]为可微函数,求下列函数的偏导数:[tex=10.786x1.571]RIekMc4iSY96xUC3OjMHZvwcfH6Sr4DX/o8uH2S7ZNIwLhDl/67JJpmbJezgAlxH[/tex].
设[tex=0.5x1.214]0K9Xf7VHWdVeOrSYAKIm6Q==[/tex]为可微函数,求下列函数的偏导数:[tex=10.786x1.571]RIekMc4iSY96xUC3OjMHZvwcfH6Sr4DX/o8uH2S7ZNIwLhDl/67JJpmbJezgAlxH[/tex].
波长 [tex=10.786x1.571]SDqiNHQDjJ5NBBGzthwvQQr1kaIqLVl9TZW5oVvLn8wfdbaXspfZ4cpCKfo8OMBKMtGWv3d0d8dmpu19tgaCuEjdR84rgI/eMR9S51wfxw0=[/tex]的单色光垂直入射于光栅常数[tex=5.786x1.357]WeVJnxCS0Ly55SQOyt2b7SSBkSy3OBi33KkaQU6GCRI=[/tex]的平面衍射光栅上,可能观察到的光谱线的最大级次是几?
波长 [tex=10.786x1.571]SDqiNHQDjJ5NBBGzthwvQQr1kaIqLVl9TZW5oVvLn8wfdbaXspfZ4cpCKfo8OMBKMtGWv3d0d8dmpu19tgaCuEjdR84rgI/eMR9S51wfxw0=[/tex]的单色光垂直入射于光栅常数[tex=5.786x1.357]WeVJnxCS0Ly55SQOyt2b7SSBkSy3OBi33KkaQU6GCRI=[/tex]的平面衍射光栅上,可能观察到的光谱线的最大级次是几?
试证明下列命题:设 [tex=4.143x1.571]eSBAw3ddS33i4HOhDJIk6wxC0WBO11psSM3QnzwD9t8=[/tex] 且是一一映射, 又有 [tex=2.786x1.429]gOrmEXeSAcYRuCZLaRwfjL3lykQbbN6yXEYv1wS4QnU=[/tex], 使得 [tex=4.286x1.357]5s1Pyp2g/W5DyoDffIRFvKxWGwi0Hn9XFD53eNq0zcc=[/tex] . 若成立等式[tex=10.786x1.571]ZqMHb0Y+8AEwYI3HJ2pef5EGfftxFVdv6aOEuILwBUW+x7/p8nbkbD55IVhAGMqo[/tex].则 [tex=3.786x1.357]NwZoQOIkudjDNXhEpfsluw==[/tex].
试证明下列命题:设 [tex=4.143x1.571]eSBAw3ddS33i4HOhDJIk6wxC0WBO11psSM3QnzwD9t8=[/tex] 且是一一映射, 又有 [tex=2.786x1.429]gOrmEXeSAcYRuCZLaRwfjL3lykQbbN6yXEYv1wS4QnU=[/tex], 使得 [tex=4.286x1.357]5s1Pyp2g/W5DyoDffIRFvKxWGwi0Hn9XFD53eNq0zcc=[/tex] . 若成立等式[tex=10.786x1.571]ZqMHb0Y+8AEwYI3HJ2pef5EGfftxFVdv6aOEuILwBUW+x7/p8nbkbD55IVhAGMqo[/tex].则 [tex=3.786x1.357]NwZoQOIkudjDNXhEpfsluw==[/tex].
字长12位,用定点补码规格化小数表示时,所能表示的正数范围是 未知类型:{'options': ['[tex=7.143x1.571]xM3zBNV4PMNdJM3sDm5jrG+uml2Kvr/jJQ2Ozajs9f/jKv/07T73hBv6NiglF7nk[/tex]', '[tex=7.571x1.571]4wB3tgYMwyOdkjMAYlSxgc2NUTY0ORfp1J00UxjBcpYv8rApVNaLlgpccFaQ/MDZ[/tex]', '[tex=6.857x1.571]QnF4gRmT3s9GQDAal9U8zMmXIAyfZZMcEWQzBjXs049IIQ5ybNV5T300AGRdhXwC[/tex]', '[tex=10.786x1.571]HyXhAlktbHPlLP9vbhnqX8JRAtIH/7dV/eAZm4/3EQwAtydPG3F5JAzFeUvjEnIjjDMRFMICpjDgBgq78lqrow==[/tex]'], 'type': 102}
字长12位,用定点补码规格化小数表示时,所能表示的正数范围是 未知类型:{'options': ['[tex=7.143x1.571]xM3zBNV4PMNdJM3sDm5jrG+uml2Kvr/jJQ2Ozajs9f/jKv/07T73hBv6NiglF7nk[/tex]', '[tex=7.571x1.571]4wB3tgYMwyOdkjMAYlSxgc2NUTY0ORfp1J00UxjBcpYv8rApVNaLlgpccFaQ/MDZ[/tex]', '[tex=6.857x1.571]QnF4gRmT3s9GQDAal9U8zMmXIAyfZZMcEWQzBjXs049IIQ5ybNV5T300AGRdhXwC[/tex]', '[tex=10.786x1.571]HyXhAlktbHPlLP9vbhnqX8JRAtIH/7dV/eAZm4/3EQwAtydPG3F5JAzFeUvjEnIjjDMRFMICpjDgBgq78lqrow==[/tex]'], 'type': 102}
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)