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- 医师定期考核
答案:
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1.1 a11…1 a3( )n1 a
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2.1 n1 n
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3.a1=(a,1,1),a2=(1,a,-1),a3=(1,-1,a
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4.=A3(1 B3)B . =A3*(1 B3)C . A3*(1 B3)D . =A3 A3B3
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5.(1)A2:B10或A3:B10
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6.A1单元格为日期“1900/1/1”,A2单元格为日期“1900/1/3”,在A3单元格中输入=A2-A1,A3单元格格式为“日期”格式,A3单元格显示为
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7.n1 = { 'a':1, 'b':2 }n2 = n1n1['a'] = 5s = n1['a'] + n2['a']print(s)代码的结果是?
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8.a11是1是11121说1是141是1151啊16111啊17是11118
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9.已知数列{an}的首项a1=1,若an 1=an 1,n∈N*,则a3=______,a1 a2 … a9=______.
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10.4.把向量β表示为向量组a1,a,a3,a4的线性组合:(1)a1=(1,1,a=(1,1,0),a3=(1,0,0),a=(10,0,0),β=(0,2,0,-1