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1.在K系辐射线中Kα2波长比Kα1的长
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2.k=10000while k>1: print(k) k=k/2
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3.若k为整形, 下述while循环执行的次数为 k=1000 while k>1: print(k) k = k/2
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4.若方程为: y(k) – y(k –1) – 2y(k –2)=f(k) – f(k – 2) 求单位序列响应h(k),单位阶跃响应 g(k)
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5.已知序列x1[k]=[3,1,1], k=0,1,2 x2[k]=[1,2,1,-1],k=0,1,2,3 计算x[k]=x1[k]*x2[k],则x[2]等于( )
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6.如果kxA、-1≤k≤0B、-1≤k<0C、-1<k≤0D、-1<k<0
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7.y=Z - π 2 kπ<x≤kπ,k∈
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8.14.求下列函数的定义域:Z.
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9.Dim x(), k%, m%x = Array(1, 2, 3, 4, 5)For k = 0 To 1 m = x(k): x(k) = x(4 - k): x(4 - k) = mNext
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10.选择i, k(1≤i, k≤9)使1)1, 2, 7, 4, i, 5, 6, k, 9为偶排列:2) 1, i, 2, 5, k, 4, 8, 9, 7为奇排列.