举一反三
- 题图 5-9 所示电路, 已知 [tex=17.357x1.357]FVGHgyQoe3GsQxGj2TFCi000/VkfLAwkseGp9auud8UCWr6JSeYk6WOmYdRbCYUUpGwAQLsrYbC6PdNMoREIiBzX6AhjIpCF7awR8is2xbYYwfFGRhaVIbA/xIFJi4vU[/tex], 求电压[tex=1.714x1.357]PHQU/cbip4o9BavRUlPCmA==[/tex]的零状态响应 [tex=2.429x1.357]SYVMpbYWYdPK6tLI+Cpzhw==[/tex] 、零输入响应[tex=2.286x1.357]J80Hqhlm7lZ7uD37wUdnPg==[/tex] 和全响应 [tex=1.714x1.357]PHQU/cbip4o9BavRUlPCmA==[/tex]。[img=294x185]17b0adf6dcfcedf.png[/img]
- 双曲线x^2/16-y^2/9=1的渐近线方程为() A: y=±16x/9 B: y=±9x/16 C: x/3±y/4=0 D: x/4±y/3=0
- 图 10-10( a ) 所示电路, 若以[tex=1.714x1.357]PHQU/cbip4o9BavRUlPCmA==[/tex]为输出, 求:网络函数 [tex=5.571x2.714]3+DBwEdC9XaCboihGEp4JgUa4WLm2C2qod1MtJjbQrM=[/tex];[br][/br][img=983x270]17aaa8d0e765642.png[/img]
- 有代码片段：function f(y) {var x=y*y;return x;} for(var x=0;x< 5;x++) {y=f(x);document.writeln(y);}输出结果是( )。 A: 0 1 2 3 4 B: 0 1 4 9 16 C: 0 1 4 9 16 25 D: 0 1 2 3 4 5
- 求在图 5-17( a ) 所示方波作用下,图 5-17( b )所示 [tex=1.5x1.0]I1C1iEfyXQRXAE6Kfy8uvw==[/tex]电路的响应电压 [tex=1.714x1.357]PHQU/cbip4o9BavRUlPCmA==[/tex]。[br][/br][img=758x261]17a376544f92ee6.png[/img]
内容
- 0
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}
- 1
求题9 18图所示电路的零状态响应[tex=1.714x1.357]LQDjhWLbNBGk2tb5pbSofQ==[/tex]。[img=338x231]17d507608dd0680.png[/img]
- 2
>>>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']
- 3
以4，9，1为为插值节点，求\(\sqrt x \)的lagrange的插值多项式 A: \( {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) B: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) C: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x +1) + {1 \over {24}}(x - 4)(x - 9)\) D: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)
- 4
阅读下面的JavaScript代码，输出结果是function f(y) {var x=y*y;return x;}for(x=0;x<; 5;x++) {y=f(x);document.writeln(y);} A: 0 1 4 9 16 25 B: 0 1 2 3 4 C: 答案都不对 D: 0 1 4 9 16