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网站悬浮图标怎么做,深圳小程序开发与制作,国内外包平台,聊城那里有做网站书籍#xff1a;Matlab实用教程 工具#xff1a;Matlab2021a 电脑信息#xff1a;Intel Xeon CPU E5-2603 v3 1.60GHz 系统类型#xff1a;64位操作系统#xff0c;基于X64的处理器 windows10 专业版 第2章 MATLAB数值计算 2.2 矩阵和数组 2.2.3 字符串 st…书籍Matlab实用教程工具Matlab2021a电脑信息Intel® Xeon® CPU E5-2603 v3 1.60GHz系统类型64位操作系统基于X64的处理器 windows10 专业版第2章 MATLAB数值计算2.2 矩阵和数组2.2.3 字符串str1Hellostr1Hellostr2Im a chinese.str2Im a chinese.whos Name Size Bytes Class Attributes str11x510charstr21x1428charlength(str1)ans5x1double(str1)x172101108108111x2x11x273102109109112char(x1)ansHellochar(x2)ansIfmmpclass(str1)anscharclass(x1)ansdoubleischar(str1)anslogical1str3[str1,str2]str3HelloIm a chinese.str6str2mat(str1,str2,str3)str63×19char数组Hello Im a chinese.HelloIm a chinese.str7strvcat(str1,str2)str72×14char数组Hello Im a chinese.str8a2*5str8a2*5eval(str8)a10disp(str1)Hello2.2.4 矩阵和数组运算A[123;456;789]A123456789det(A)ans-9.5162e-16rank(A)ans2inv(A)警告:矩阵接近奇异值或者缩放错误。结果可能不准确。RCOND2.202823e-18。 ans1.0e16*0.3153-0.63050.3153-0.63051.2610-0.63050.3153-0.63050.3153[v,d]eig(A)v-0.2320-0.78580.4082-0.5253-0.0868-0.8165-0.81870.61230.4082d16.1168000-1.1168000-0.0000diag(A)ans159[l,u]lu(A)l0.14291.000000.57140.50001.00001.000000u7.00008.00009.000000.85711.714300-0.0000[q,r]qr(A)q-0.12310.90450.4082-0.49240.3015-0.8165-0.8616-0.30150.4082r-8.1240-9.6011-11.078200.90451.809100-0.0000[u,s,v]svd(A)u-0.21480.88720.4082-0.52060.2496-0.8165-0.8263-0.38790.4082s16.84810001.06840000.0000v-0.4797-0.7767-0.4082-0.5724-0.07570.8165-0.66510.6253-0.4082x1[12;34;56]x1123456x2eye(3,2)x2100100x1x2 ans223556x1.*x2 ans100400x1*x2 错误使用*用于矩阵乘法的维度不正确。请检查并确保第一个矩阵中的列数与第二个矩阵中的行数匹配。要执行按元素相乘请使用.*。 相关文档x3eye(2,3)x3100010x1*x3 ans120340560A[2-13;31-5;4-11]A2-1331-54-11B[559]B559B[5;5;9]B559XA\B X2.0000-1.00000.0000x1[12;34]x11234x2eye(2)x21001x1/x2 ans1234inv(x1)ans-2.00001.00001.5000-0.5000x1\x2 ans-2.00001.00001.5000-0.5000x1./x2 ans1Inf Inf4x1.\x2 ans1.0000000.2500x1^2ans7101522x1^-1ans-2.00001.00001.5000-0.5000x1^0.2ans0.83970.3672i0.2562-0.1679i0.3842-0.2519i1.22390.1152i2^x1 ans10.482714.151921.227831.71062.^x1 ans24816x1.^x2 ans1114x3x1x2*i x31.00001.0000i2.00000.0000i3.00000.0000i4.00001.0000ix3ans1.0000-1.0000i3.00000.0000i2.00000.0000i4.0000-1.0000ix3. ans1.00001.0000i3.00000.0000i2.00000.0000i4.00001.0000itlinspace(0,2*pi,6)t01.25662.51333.76995.02656.2832ysin(t)y00.95110.5878-0.5878-0.9511-0.0000y1abs(y)y100.95110.58780.58780.95110.00001-exp(-t).*y ans1.00000.72930.95241.01361.00621.0000a0;b5;c10;(a~0)(bc)anslogical0(a~0)||(bc)anslogical1tlinspace(0,3*pi);ysin(t)y列1至2600.09510.18930.28170.37170.45820.54060.61820.69010.75570.81460.86600.90960.94500.97180.98980.99890.99890.98980.97180.94500.90960.86600.81460.75570.6901列27至520.61820.54060.45820.37170.28170.18930.0951-0.0000-0.0951-0.1893-0.2817-0.3717-0.4582-0.5406-0.6182-0.6901-0.7557-0.8146-0.8660-0.9096-0.9450-0.9718-0.9898-0.9989-0.9989-0.9898列53至78-0.9718-0.9450-0.9096-0.8660-0.8146-0.7557-0.6901-0.6182-0.5406-0.4582-0.3717-0.2817-0.1893-0.09510.00000.09510.18930.28170.37170.45820.54060.61820.69010.75570.81460.8660列79至1000.90960.94500.97180.98980.99890.99890.98980.97180.94500.90960.86600.81460.75570.69010.61820.54060.45820.37170.28170.18930.09510.0000t1(tpi)|(t2*pi)t11×100logical 数组 列1至66111111111111111111111111111111111000000000000000000000000000000000列67至1001111111111111111111111111111111111y1t1.*y y1列1至2600.09510.18930.28170.37170.45820.54060.61820.69010.75570.81460.86600.90960.94500.97180.98980.99890.99890.98980.97180.94500.90960.86600.81460.75570.6901列27至520.61820.54060.45820.37170.28170.18930.09510000000000000000000列53至78000000000000000.00000.09510.18930.28170.37170.45820.54060.61820.69010.75570.81460.8660列79至1000.90960.94500.97180.98980.99890.99890.98980.97180.94500.90960.86600.81460.75570.69010.61820.54060.45820.37170.28170.18930.09510.0000a[1inf;02]a1Inf02b[01;10]b0110all(a)ans1×2logical 数组01any(a)ans1×2logical 数组11isequal(a,b)anslogical0isempty(a)anslogical0isfinite(a)ans2×2logical 数组1011isinf(a)ans2×2logical 数组0100isnan(a)ans2×2logical 数组0000isnumeric(a)anslogical1isreal(a)anslogical1isprime(b)ans2×2logical 数组0000isspace(a)ans2×2logical 数组0000find(b)ans23