实验2 Matlab的基本运算.doc

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1、实验2Matlab的基本运算实验目的：1、掌握建立矩阵的方法；2、掌握Matlab各种表达式的书写规则以及常用函数的使用。实验内容：1、，其中解：x=[21+2*i;-0.455];z1=1/2*log10(x+sqrt(1+x^2))z1=0.3090-0.0110i0.3895+0.1589i0.0929+0.4058i0.5012-0.0019i2、a=-3.0:0.1:3.0;z2=1/2*[exp(0.3*a)-exp(-0.3*a)].*sin(a+0.3)+log((a+0.3)/2)a=-3.0:0.1:3.0;z2=1/2*[exp(0.3*a)-exp

2、(-0.3*a)].*sin(a+0.3)+log((a+0.3)/2)z2=Columns1through30.7388+3.1416i0.7696+3.1416i0.7871+3.1416iColumns4through60.7913+3.1416i0.7822+3.1416i0.7602+3.1416iColumns7through90.7254+3.1416i0.6784+3.1416i0.6196+3.1416iColumns10through120.5496+3.1416i0.4688+3.1416i0.3780+3.1416iColumns13through

3、150.2775+3.1416i0.1680+3.1416i0.0497+3.1416iColumns16through18-0.0771+3.1416i-0.2124+3.1416i-0.3566+3.1416iColumns19through21-0.5104+3.1416i-0.6752+3.1416i-0.8536+3.1416iColumns22through24-1.0497+3.1416i-1.2701+3.1416i-1.5271+3.1416iColumns25through27-1.8436+3.1416i-2.2727+3.1416i-2.9837+

4、3.1416iColumns28through30-37.0245-3.0017-2.3085Columns31through33-1.8971-1.5978-1.3575Columns34through36-1.1531-0.9723-0.8083Columns37through39-0.6567-0.5151-0.3819Columns40through42-0.2561-0.1374-0.0255Columns43through450.07920.17660.2663Columns46through480.34780.42060.4841Columns49throu

5、gh510.53790.58150.6145Columns52through540.63660.64740.6470Columns55through570.63510.61190.5777Columns58through600.53270.47740.4126Column610.3388提示：利用冒号表达式生成a向量，求各点的函数值时用点乘运算。3、提示：用逻辑表达式求分段函数值。4、已知：，求下列表达式的值。（1），其中I为单位矩阵；A=[1234-4;34787;3657];B=[13-1;203;3-27];I=eye();A+6*BA-B+Ians=1852-10

6、467105215349ans=1232-2338851681（2）和A*Bans=684462309-72596154-5241>>A.*Bans=1210246802619-13049（3）和A^3ans=372264860478688>>A.^3ans=172839304-643930434327343（4）和A/Bans=16.4000-13.60007.600035.8000-76.200050.200067.0000-134.000068.0000>>ABans=-0.03130.3029-0.33240.0442-0.03230.10630.0317-0.

7、11580.15585、已知：矩阵完成下列操作：（1）取出A的前3行构成矩阵B，前两列构成矩阵C，左下角子矩阵构成矩阵D，B与C的乘积构成矩阵E。A=[2310-0.7780;41-45655;325032;6-9.54543.14]A=23.000010.0000-0.7780041.0000-45.000065.00005.000032.00005.0000032.00006.0000-9.540054.00003.1400>>B=[A(1:3),:]???B=[A(1:3),:]

8、Error:UnexpectedMATL