在下列二次型中, 正惯性指数等于 2 的是
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举一反三
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- 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}
- 在下列二次型中, 正惯性指数等于 2 的是 未知类型：{'options': ['[tex=13.786x1.571]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKAD1EpX2EG4iGqmx8WmWIijQ/1TBKOkYUR3PceE6jcAcuJWCFZNY7rgfvoZD8hjgnH6mnfX7xFxYsxbeC8J0MU/[/tex]', '[tex=20.0x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMgh6qDu0Esm2hn0XdQHhgVu9qtIccLZ4PooZnR82N9TbDifHftkucc0Q6jUSD/QldaNHWkbnhOWTFIHc8kOCmgQ==[/tex]', '[tex=12.786x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMrpG3Ol8X9Iuj7ckTZPEhiXRJE291fLQSXdrfPCxIyD0=[/tex]', '[tex=19.5x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMrpG3Ol8X9Iuj7ckTZPEhiZT9IGbyWQcJ4g2U4WKVdSafU4LRqNlmItRnMTLxj2I+ESRedIlCVJELqkZllvLTdw==[/tex]'], 'type': 102}
- 在下列二次型中, 正惯性指数等于 2 的是 未知类型：{'options': ['[tex=13.786x1.571]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKAD1EpX2EG4iGqmx8WmWIijQ/1TBKOkYUR3PceE6jcAcuJWCFZNY7rgfvoZD8hjgnH6mnfX7xFxYsxbeC8J0MU/[/tex]', '[tex=20.0x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMgh6qDu0Esm2hn0XdQHhgVu9qtIccLZ4PooZnR82N9TbDifHftkucc0Q6jUSD/QldaNHWkbnhOWTFIHc8kOCmgQ==[/tex]', '[tex=12.786x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMrpG3Ol8X9Iuj7ckTZPEhiXRJE291fLQSXdrfPCxIyD0=[/tex]', '[tex=19.5x1.5]CKlOGn/4oc+CIjd/NrEXYL4dkmrBlW2GCC51Nn4jxKDxI5EU0Rj+WwqAYMSi5YHMrpG3Ol8X9Iuj7ckTZPEhiZT9IGbyWQcJ4g2U4WKVdSafU4LRqNlmItRnMTLxj2I+ESRedIlCVJELqkZllvLTdw==[/tex]'], 'type': 102}
- 输出九九乘法表。 1 2 3 4 5 6 7 8 9 --------------------------------------------------------------------- 1*1=1 2*1=2 2*2=4 3*1=3 3*2=6 3*3=9 4*1=4 4*2=8 4*3=12 4*4=16 5*1=5 5*2=10 5*3=15 5*4=20 5*5=25 6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36 7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49 8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64 9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81