方阵的特征值分别是()。
A.9.9473,-2.9736+1.5220i,-2.9736-1.5220iB.9.9473,-2.9736+1.5220i,-2.9736+1.5220iC.9.9473,-2.9736-1.5220i,-2.9736-1.5220iD.-9.9473,-2.9736+1.5220i,-2.9736-1.5220i
单项选择题用下面哪个Matlab命令可以生成m*n阶服从[0,1]均匀分布的随机数矩阵?()
A.random(m,n)B.rand(m,n)C.random(n,m)D.rand(n,m)
单项选择题随机变量X服从标准正态分布N(0,1),若P(X≤x)取值为0.1,0.3,0.5,0.7,0.9,则对应的x值分别是()。
A.1.2816,0.5244,0,-0.5244,-1.2816B.-1.2816,-0.5244,0,0.5244,1.2816C.1.2816,-0.5244,0,0.5244,-1.2816D.-1.2816,0.5244,0,-0.5244,-1.2816
单项选择题用Monte Carlo法计算二重积分的结果是()。
A.0.866B.0.688C.0.686D.0.868
单项选择题用surf命令绘制二元函数在[-5,5]*[0,2π]范围内的图像为()。
A.B.C.D.
单项选择题在区间[-5,5]上取21个节点,用三次样条插值、分段三次插值法分别计算函数在x=0.01处的插值结果为()。
A.2.0112,2.0092B.0.8112,0.4092C.1.0112,1.0092D.0.0112,0.0092