求 [tex=10.571x2.929]ghSZza3mh9bJ6UX/h0WBdBQn8Vuzh0J9sQZuA7h3bSpPBizdj6LfeqzMbHheKgG17vAQjHjZbmyPEZQYJBO9cFvWhgOXEGKd/7oHNuuQknE=[/tex]的单调区间与极值。
求 [tex=10.571x2.929]ghSZza3mh9bJ6UX/h0WBdBQn8Vuzh0J9sQZuA7h3bSpPBizdj6LfeqzMbHheKgG17vAQjHjZbmyPEZQYJBO9cFvWhgOXEGKd/7oHNuuQknE=[/tex]的单调区间与极值。
下列函数在定义域内不连续的是()。 未知类型:{'options': ['[tex=10.571x2.929]yXywZUmrNA4aqEyepFqydDiD+2a79dMCjxWN8w69xhWFt95LYEI/ZL2hXqRxVOxnsyf2BBZXLKhcRESMDMZiZeL7HdzvJXIDhQoyNrYtFgI=[/tex]', '[tex=4.429x1.714]V4wLc7knJuWiAD8vNnYTM5T0GTDbHSlbkBiMKuJSbYs=[/tex]', '[tex=10.571x2.929]yXywZUmrNA4aqEyepFqydDiD+2a79dMCjxWN8w69xhWFt95LYEI/ZL2hXqRxVOxnclhOfMPDEaCSYvSgmpzrBQ61oJgDWdxphhToA5auX8j1TAtpViAXIlqAAfrRzo/5[/tex]', '[tex=16.286x1.5]It5Ts/RPlE/BR9xABb2hIXO4I+JmSTpZFR0zPlqc5+WeLncxKTuDjzJvEMQSiB693kpcQ/2TncfhtuHxRdTIYg==[/tex]'], 'type': 102}
下列函数在定义域内不连续的是()。 未知类型:{'options': ['[tex=10.571x2.929]yXywZUmrNA4aqEyepFqydDiD+2a79dMCjxWN8w69xhWFt95LYEI/ZL2hXqRxVOxnsyf2BBZXLKhcRESMDMZiZeL7HdzvJXIDhQoyNrYtFgI=[/tex]', '[tex=4.429x1.714]V4wLc7knJuWiAD8vNnYTM5T0GTDbHSlbkBiMKuJSbYs=[/tex]', '[tex=10.571x2.929]yXywZUmrNA4aqEyepFqydDiD+2a79dMCjxWN8w69xhWFt95LYEI/ZL2hXqRxVOxnclhOfMPDEaCSYvSgmpzrBQ61oJgDWdxphhToA5auX8j1TAtpViAXIlqAAfrRzo/5[/tex]', '[tex=16.286x1.5]It5Ts/RPlE/BR9xABb2hIXO4I+JmSTpZFR0zPlqc5+WeLncxKTuDjzJvEMQSiB693kpcQ/2TncfhtuHxRdTIYg==[/tex]'], 'type': 102}
证明Cauchy恒等式:当[tex=2.5x1.143]zO9Fx5eNiwmDKAUfJb2c2Q==[/tex]时,有[tex=10.429x2.929]Fp3qzvUmkH15oVWFsxCJLIYMr9Sn5Lk7oqGIBuZyNobb87HFlohf9yXwBpcstHrZaKaWup9DPPaTJc8juy68Iv+whhKI00WOHBdtlb9IjcY8betMHRRZW323zHQniCvp[/tex][tex=10.571x2.929]Fp3qzvUmkH15oVWFsxCJLBzQt67hiTjzi/RhIHTY0jT7mwSvs0zTwvcNMwaOITKvH43s8thqzPMBk5nCO4uVRTbkuOIGJWut8QhSNl8E0JeSdG+heRm4dUYVmyIwnWvo[/tex][tex=14.929x2.286]8vZlY5Pv2FSuQFrNzers0kr+WyemKgVUdk6/fTRVIZiHxDw2Glv8mVT3Zi3uhD40llxldug/ZjckZm7DOOpyDVFJCQgP181HYQVhVFmwoSOkgZlkpILT9oS3u/7uGkQeFLQbCQ+NvRyE209eMnBP6Q==[/tex].
证明Cauchy恒等式:当[tex=2.5x1.143]zO9Fx5eNiwmDKAUfJb2c2Q==[/tex]时,有[tex=10.429x2.929]Fp3qzvUmkH15oVWFsxCJLIYMr9Sn5Lk7oqGIBuZyNobb87HFlohf9yXwBpcstHrZaKaWup9DPPaTJc8juy68Iv+whhKI00WOHBdtlb9IjcY8betMHRRZW323zHQniCvp[/tex][tex=10.571x2.929]Fp3qzvUmkH15oVWFsxCJLBzQt67hiTjzi/RhIHTY0jT7mwSvs0zTwvcNMwaOITKvH43s8thqzPMBk5nCO4uVRTbkuOIGJWut8QhSNl8E0JeSdG+heRm4dUYVmyIwnWvo[/tex][tex=14.929x2.286]8vZlY5Pv2FSuQFrNzers0kr+WyemKgVUdk6/fTRVIZiHxDw2Glv8mVT3Zi3uhD40llxldug/ZjckZm7DOOpyDVFJCQgP181HYQVhVFmwoSOkgZlkpILT9oS3u/7uGkQeFLQbCQ+NvRyE209eMnBP6Q==[/tex].
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))