设[tex=5.429x1.357]ipQZtUadSfa+xHYBxwXmT9skjdb0cz0qKrutu0egeYiy6oLUR1QuDS3hR017C7NF[/tex],证(1) 存在[tex=2.357x1.214]BT7HQAy5GjfZdSgpd57PKnscrqcsJim9pOBv3EZlph0=[/tex],[tex=2.143x1.214]fdR7t4oVJhV08CIhyFu4RA==[/tex],[tex=7.286x1.357]I0S7YmfiBWOUIbXXy093ABTFrzmDlY2372t/BiRKmPk=[/tex],[tex=1.5x1.0]9R1iO9EH8ROnKwEON0/V1w==[/tex]使[tex=3.071x1.0]FQxXCOTKMRfpdLQjm6tLqA==[/tex];(2) 存在[tex=2.643x1.214]lm1bD7FNxYMRadaYfCaVaAhmNjQKET8XbNu5YWNqVSU=[/tex],[tex=2.286x1.214]WHGElpapIUBQRqFA3Q4ZEw==[/tex],[tex=7.0x1.357]+w5YNOhryr9OY/+Ai6Hyl8UuHsICosWk+P71jkSJjEE=[/tex],使[tex=3.357x1.0]4ski73TDViKb4JBDVCGDmw==[/tex];(3) 存在[tex=2.286x1.214]d7S1LcIgklK8UUaYKlZqXvaVXC4IWD9FMerwDsu+miA=[/tex],[tex=1.929x1.214]VbplOwcj2mUxnMAxqFikLw==[/tex],[tex=7.071x1.357]7non2cYltk1raU9C6EgNiIsvRJilD1bu0lrAI61bHXQ=[/tex],[tex=1.429x1.0]fn35X1c7wWwy40cZYHFICA==[/tex]使[tex=2.929x1.0]294rYApfuLvKak9fzKAmSA==[/tex]。
举一反三
- 6个顶点11条边的所有非同构的连通的简单非平面图有[tex=2.143x2.429]iP+B62/T05A6ZTM0eeaWiQ==[/tex]个,其中有[tex=2.143x2.429]ndZSw3zT0QTOVLVdoUto1Q==[/tex]个含子图[tex=1.786x1.286]J+vVZa2YaMpc6mJBbqVvWw==[/tex],有[tex=2.143x2.429]lmhx48evnQMhi03NovPXig==[/tex]个含与[tex=1.214x1.214]kFXZ1uR8GjycbJx+Ts2kyQ==[/tex]同胚的子图。供选择的答案[tex=3.071x1.214]3KinXFh3SXhZ7nIe1y9KEV6aadxhhJWeEy6Dij1iObdMUZkY6ZA5J2dVVjPSuhEf[/tex]:(1) 1 ;(2) 2 ;(3) 3 ; (4) 4 ;(5) 5 ;(6) 6 ; (7) 7 ; (8) 8 。
- 判断下列命题是否为真:(1)[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex](2)[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex](3)[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex](4)[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex](5)[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex](6)[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex](7)若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex],则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex](8)若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex],则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
- 某人对商品x的需求函数是[tex=5.214x1.214]0m6eBd5eyK0NjuxeKfwtIw==[/tex],[tex=4.214x1.214]I717YsPbj8Rnym1v2XQ+sFNkUl7mqUsGwbjwjXmy2xc=[/tex],这里[tex=0.571x1.0]Za328cIB4SeR7rrzY+MM5Q==[/tex]是[tex=0.571x0.786]ZSLOI4fiO1oAbVC5M8IVkA==[/tex]的价格。如果商品x 的价格是0.5元,那么他对商品x的需求价格弹性是 未知类型:{'options': ['-10', '- 1/5', '-1/10', '\xa0- 1/3'], 'type': 102}
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- 如果X满足[tex=1.0x1.214]uDLq1pltx8bidzPpXavtVw==[/tex]公理和[tex=1.0x1.214]HSZQQmMoQLPTE8orMMvtgA==[/tex]公理,则也满足[tex=1.0x1.214]9/dZqDJTFQ9zWNw2dnPh4g==[/tex]公理。