求下列函数的傅氏积分:[p=align:center][tex=12.0x3.643]G6kvWfpkGVYUDXDVCjlJ3wwebIX7aht5fS9lH+Su4souyi0bWa1B1GJ9pY8yRYfnMi5pJxHx1imNQNcu0gkZYYh+b9SkBeR+0zouG9tJRKQ=[/tex]
解：函数 [tex=1.643x1.357]7Q+UoYR3Mfxe2DKP2dXsQw==[/tex] 的傅氏变换为: [tex=24.786x2.786]tOmZLzU0HDbETI9qdHB81nj/qJpVapSVMhFTAq888pCIi/tY6RoVDuOWxS8W16/WLA9elwa68GNebjAUvuRTjq6eEX1xjuJxF2k6NkQbVAvDKTdktXuiJPJSnxNVulL05dPteDbjSXxe6gEeuH5GKG3N1LWArdP8NEXtx8zPrWU=[/tex][tex=12.357x2.786]Qp0pQTFpAwgGVJ9fNh6MEuF9qECeIDCPdjAAveqVg4X9EsfHGHR1/Sdgp7PEtlc559WyqvbcnZ/DDXCuaD8RzWBMUVptTCHet+TYwXvLMi4=[/tex][tex=20.714x2.786]zVdQvG4MB6zq2YOImIkHzrVHkq9Q3SrSnrD/LrRz+AtuP3ppv9ZQlDlWjMyaOsBRTBl0dqE2PPMtkYeY5PAF/D/E6NJjMOtW7i8/6llz9+mByZJnyRg6945ngrML0WDRL6FvN3n+/S4gi/6TospU1dTilUBeLZXeGbVYUybAn9w=[/tex][tex=29.929x3.357]zVdQvG4MB6zq2YOImIkHzpXYUV5+3daLU1wVdfXZ0XpuVtTHyrRiMDRP97q2ZP6p+G/1ImIUl2Ol0v9AQPCw/3uAJ2k7HSal1fHRti0/vQ2EdvVfajcajozh+HEvn4MwbvOrNP4b2Q+2APu7V47J4ckeeXFhVqOzMUD9rXeBxvXYCOcSgz54SIOdxxSg//BzMaEbA3bRvJlxoW3Uwg3CslEXinFgoBX4eVTPfu5vcoNFiuUKYtuALc8LLqjvfDGI[/tex][tex=21.143x2.929]zVdQvG4MB6zq2YOImIkHzgY++atYTp4F0H5yVhL0h0oxHWhrhVSboPXU9CkB92UFHloHRu/IQWSU8Ck+F0cXnEiZ3vlz6NNnVWH0fjgY5BKgZZNd0/84Dqmm1VoDKfU2ndB1J9BMSQ9FDaSMiX/bzScS+Uu0fFX5k4L/f80sEec73SlhSuI/JKFeIP78RwSZZkfYwekekfdkUsVntSXn3w==[/tex]因为函数 [tex=11.857x3.357]b7Fls7iATEUWHjrNBnbaR+mxQkQuBIO1sgzxp9Ej5TfLggJHZVLPvQmcRONs/nGH7nWp1Bok8th0fCHCaRk415Tu0YmRJS57p8XX1/w9LwANIDgdoH8mxsJWhXmGG140[/tex] 在其定义域内连续，所以 [tex=16.429x2.786]bvaVX2M6ozogMchySKUgKmvS3BBMJTTYLjbjiq2lxzUpRrqQ55VMNHqOmg1JVWPN28lQ1yz3igJHRiXJNx4ATWYJYaqe/Mwnfrxs3RISNfMfhH6C6gFgKGMy6kPNKwCDCDzaJa/QUCpaIhjmVscypQ==[/tex][tex=14.429x2.929]c+5NGHn1JKEEfc2G38CV+eSQ7QMoEpgwrtbUz6YOcdosWJkaKSelMokTIQ3z+IKB2gWIA57ogqW37J0eQtmKDAttrf6I8Z1OMCkv9MuhGQqPe1YL15OKpJ+34hRwp6KkEBPTp4WGET8asjTydfiHzIKj0IEudC0SlRMsJjXZ9AECgs92JGPSxMctqYy8iygJ[/tex][tex=21.286x2.929]c+5NGHn1JKEEfc2G38CV+eSQ7QMoEpgwrtbUz6YOcdosWJkaKSelMokTIQ3z+IKB2gWIA57ogqW37J0eQtmKDAttrf6I8Z1OMCkv9MuhGQqPe1YL15OKpJ+34hRwp6KkEBPTp4WGET8asjTydfiHzIc9X2vaE04qrZ2zliT/2qs+iIDppKrstOAQe9m+kcseNSXGNCbMFtyfVmoi0zztBg==[/tex][tex=18.071x2.857]pEW8802mRgBkt6O27XRX6Zu8H7C281VlV/yUnlOrBVZKYPu0Nd6Ggss2k+v8FSdXZDfo5KJtU5dbO/l7jfz8tCzi3PsFPfmx5LjuLvM9E6wXMf5igTUXIz5e1D2KNFycJOCGRgfNvqyI3up8kt+MggPwz9b1PpX5YQ7ddbViz7235CNcxyZpIxHWJNZsUV+BSwuPS77Jc/69YC+pjY5A+g==[/tex]即 [tex=19.714x2.857]40AihyQOCL7wMQaie2VydpQ7fanIqnWD1tnhVdu6kaeI3THhA/2IaR2DWI+4s36IjcN0as+gdDLGmavIVQDOlV6ijDF6katVbNHPmUgtUnyI9dip9hF/3Z0XC+V5fsmJKh1siw8dlKRWvcmi10z31tMB/RPW6eCvng5D8NHGzMS/5hroKTMa096hfQfz7HJCm7RAt8/vYyAGk5l9i0++Jw==[/tex].
举一反三
- 【单选题】请用地点定桩法在4分钟内记忆数字。 4 0 1 3 6 3 5 1 9 8 8 9 7 2 9 3 0 9 5 3 1 7 7 5 2 3 3 0 5 0 1 4 1 3 8 3 5 7 9 7 (5.0分) A. 已背 B. 未背
- >>>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']
- 以下程序段实现的输出是（）。for(i=0;i<;=9;i++)s[i]=i;for(i=9;i>;=0;i--)printf("%2d",s[i]);[/i][/i] A: 9 7 5 3 1 B: 1 3 5 7 9 C: 9 8 7 6 5 4 3 2 1 0 D: 0 1 2 3 4 5 6 7 8 9
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
内容
- 0
下面语句的输出结果是？range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
- 1
下面是图的拓扑排序的是？(多选)[img=340x240]1802faef6ebcc2a.png[/img] A: 2 8 0 7 1 3 5 6 4 9 10 11 12 B: 2 8 7 0 6 9 11 12 10 1 3 5 4 C: 8 2 7 3 0 6 1 5 4 9 10 11 12 D: 8 2 7 0 6 9 10 11 12 1 3 5 4
- 2
设DES加密算法中的一个S盒为： 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111
- 3
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}
- 4
not 1 or 0 and 1 or 3 and 4 or 5 and 6 or 7 and 8 and 9的值为