• 2022-11-04
    绘出时间函数的波形图[tex=3.643x1.357]/s+J2I2grIx4JRHSyIGijEyUO6/NhMLWePwrB7tq/iI=[/tex]
  • [img=141x108]17a2c8d917599f6.png[/img]

    内容

    • 0

      绘出下列信号的波形图:[tex=6.857x1.571]0cQ8ORuKlIa6nplCU52oAGaRj81bHijxYSj+ylzCinVxl125vT++Cu5kGqddCXOc[/tex]

    • 1

      ‌下面说法错误的是( )。‌‌知识点:列表推导式‌ A: dict([(x, x**2) for x in range(6)]) 创建的字典是{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25} B: [[x*3+y for y in range(1,4)] for x in range(3)] 创建的是二维列表 [[1, 2, 3], [4, 5, 6], [7, 8, 9]] C: number = [-2, 4, 6, -5]string = 'ab'z = [(i, j) if i>0 else (-i, j) for i in number for j in string]这段代码创建的列表为[(2, 'a'), (2, 'b'), (4, 'a'), (4, 'b'), (6, 'a'), (6, 'b'), (5, 'a'), (5, 'b')] D: ' '.join([i for i in range(1,11)])的运算结果为字符串'1 2 3 4 5 6 7 8 9 10'

    • 2

      求函数[tex=3.286x1.429]kdT+eIE7CHPynuN6CaN40g==[/tex](抛物线)隐函数的导数[tex=1.071x1.429]BUw1BPFU3fsJlAl/vt9M9w==[/tex]当x=2与y=4及当x=2与y=0时,[tex=0.786x1.357]Hq6bf3CacUy07X+VImUMaA==[/tex]等于什么?

    • 3

      若已知[tex=29.857x1.357]LnriDboly+krAQqvY8CZOyB8NhM5wISYhMgCKJz+v3INinfkbDp8umh0loOGjeG9pvFMZANidfVHAFjlJci6McZW1g3Wn8Wt8YZuOu4FSYvswU1gtvyhmP1aZ+I8ujBiJLoU6g7fgkmsxV3GG3LJbewfHkokP7SWKQ5jhM+sFBue+nAYNZ9phZIw2UcSeEtw[/tex]。绘出 [tex=0.714x1.214]j065aHOhfAYzZ9MCADI8tA==[/tex]的波形图 

    • 4

      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 。