画出下列差分方程所描述的模拟图。[br][/br][tex=9.286x2.357]vIVhZD71D0mPX9umn3563YwUgBfp1j8TTYknQDKdu5U=[/tex]

设函数 [tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex] 存在二阶导数, [tex=4.143x1.357]BJMhsnWWy+b17IpjqvqyPw==[/tex], 则 [tex=1.786x1.357]eE9dXkpN2effVrNkAbXJmClGvj/EWFaJcsc0DJCFeuY=[/tex] 未知类型：{'options': ['[tex=9.286x2.357]37TQb255fZowyaPzOHy4h3kVoXLcN3AorUF5hsxVx2tKeBSQZcBcFcNRBJoTm6MoQBsBiLI2Oc5sRpMzRci3I30tKrEv3un5aCTaPPW+gPg=[/tex]', '[tex=9.286x2.357]37TQb255fZowyaPzOHy4h3kVoXLcN3AorUF5hsxVx2sZsn4pmMUHtaGdQRsv/1rABr3T3aUTgvVCm4Hf2cFIdjoBb49jpWrHX/UnwbEa9C4=[/tex]', '[tex=9.857x2.357]37TQb255fZowyaPzOHy4h+4K/AFwpfmhpziRDI4J6k5lkjegV25r7h2t0tDlZfSpsAXLO877+/YnmP1G4HMb9MtX0Jmb/aA8I1I34ankEUg=[/tex]', '[tex=9.857x2.357]37TQb255fZowyaPzOHy4h+4K/AFwpfmhpziRDI4J6k7wp5o/zCD4jGKLPJ1+dJ9SLRdhdPBKenYHwz9MoVqCXm2vFx4VTqLhzxg9eMB5rb0=[/tex]'], 'type': 102}

小明用最小分度值为1 mm的刻度尺测量一个物体的长度，四次测量的数据分别为2.35 cm、2.36 cm、2.25 cm、2.36 cm，则测量结果应记为 A: 2.35 cm B: 2.36 cm C: 2.357 cm D: 2.33 cm

下列函数中，可作为某个随机变量的分布函数的是(    ). 未知类型：{'options': ['[tex=6.857x2.429]ZIzlaP1m0Dctl/W+RkDRbYKzNowBeioR9VzcbbcahDIMKqVRhTlP2c/dLPXlkioU[/tex]', '[tex=9.286x2.357]Ref0q4jZdEs+fiKAttprrbYlBp2O0K1DE+JuycXVGuyfws34WNA6yitUwzV6MlRO[/tex];', '[tex=13.5x3.929]MUl3NXltX67+15+9JNKI4GnT277zQbY0hnaawFhb9TbT97e54cKS6cFi3aMdekb8ia5Vu8dHKEFwt8MntEE2jA8Wl0kjtv7ZJsMxt5PSxgrlbkkCr7VOttYiaLGrOkufpgmE2bXSrxCAkbDd95bXsg==[/tex]', '[tex=17.643x2.429]MpAJ0TzfoBODsF7KlLOTiNkNwgXLRaPBr2mE8Gp/IUx9TDW0K/l3EN8y8+q6vXjSJtVJqly7z0Gah9dAraSpKyTfoCGYHNh0nCbBwN2YPTU57j6sfWwJp5vt3VueqA8p[/tex]'], 'type': 102}

下列函数中，可作为某个随机变量的分布函数的是(    ). 未知类型：{'options': ['[tex=6.857x2.429]ZIzlaP1m0Dctl/W+RkDRbYKzNowBeioR9VzcbbcahDIMKqVRhTlP2c/dLPXlkioU[/tex]', '[tex=9.286x2.357]Ref0q4jZdEs+fiKAttprrbYlBp2O0K1DE+JuycXVGuyfws34WNA6yitUwzV6MlRO[/tex];', '[tex=13.5x3.929]MUl3NXltX67+15+9JNKI4GnT277zQbY0hnaawFhb9TbT97e54cKS6cFi3aMdekb8ia5Vu8dHKEFwt8MntEE2jA8Wl0kjtv7ZJsMxt5PSxgrlbkkCr7VOttYiaLGrOkufpgmE2bXSrxCAkbDd95bXsg==[/tex]', '[tex=17.643x2.429]MpAJ0TzfoBODsF7KlLOTiNkNwgXLRaPBr2mE8Gp/IUx9TDW0K/l3EN8y8+q6vXjSJtVJqly7z0Gah9dAraSpKyTfoCGYHNh0nCbBwN2YPTU57j6sfWwJp5vt3VueqA8p[/tex]'], 'type': 102}

下列函数中，可作为某个随机变量的分布函数的是(    ). 未知类型：{'options': ['[tex=6.857x2.429]ZIzlaP1m0Dctl/W+RkDRbYKzNowBeioR9VzcbbcahDIMKqVRhTlP2c/dLPXlkioU[/tex]', '[tex=9.286x2.357]Ref0q4jZdEs+fiKAttprrbYlBp2O0K1DE+JuycXVGuyfws34WNA6yitUwzV6MlRO[/tex];', '[tex=13.5x3.929]MUl3NXltX67+15+9JNKI4GnT277zQbY0hnaawFhb9TbT97e54cKS6cFi3aMdekb8ia5Vu8dHKEFwt8MntEE2jA8Wl0kjtv7ZJsMxt5PSxgrlbkkCr7VOttYiaLGrOkufpgmE2bXSrxCAkbDd95bXsg==[/tex]', '[tex=17.643x2.429]MpAJ0TzfoBODsF7KlLOTiNkNwgXLRaPBr2mE8Gp/IUx9TDW0K/l3EN8y8+q6vXjSJtVJqly7z0Gah9dAraSpKyTfoCGYHNh0nCbBwN2YPTU57j6sfWwJp5vt3VueqA8p[/tex]'], 'type': 102}

设 [tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex] 二阶可导, [tex=4.429x1.357]6pfMXWY2Zudf8o7F8+Ly0A==[/tex] 则 [tex=1.786x1.357]rjzw0bBUODiY66l+Mq83xLk8q3OTJEUj4oQfCY7kV9w=[/tex][input=type:blank,size:4][/input]. 未知类型：{'options': ['[tex=3.429x1.429]79SmwT+8J9VTqKDgDEyFq36c2RHIS3SWjLpUy+4OCRw=[/tex]', '[tex=4.786x2.357]79SmwT+8J9VTqKDgDEyFq+6Vce9RWNrS41MVuKVhomzpL+9B5WWM6KykGApjIuzc[/tex]', '[tex=9.286x2.357]LPNgIfSpSvzTpeCN4IyxythzcIPD2hq8+9kNvxx5sUTwkyZFvHTPK9KhGaQf1aE4fuitgC1JMKgr9q1un521elcfNAuwPG9SKckmcJGUF34=[/tex]', '[tex=9.143x2.357]LPNgIfSpSvzTpeCN4IyxythzcIPD2hq8+9kNvxx5sUQ7Jnqs6qhl03FIo6Tq7gtdl0qbdkbiFFvJaI6VPY036VKPixxheOokQnfdTwg2qVA=[/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}

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)