MATLAB Lecture hoolofMathematicalSciencesXiamenUniversityhttp://gdjpkc.xmu.edu.cn 0.0314 > volume area*o. 5% the volume of a cylinder with radius 0.1 and vo⊥ume= 0.0157 >>(12+2*(7-4))/3^2 ans >>8=1-1/2+1/3-1/4+1/5-1/6 +1/7-1/8 0.6345 >>z1=3+4⊥ z1= 3.0000+4.00001 >z2=1+2*⊥ >>z3=2+exp(i*pi/6) >z=z1*z2/z3 MATLAB - Getting Started Matrices and Arrays - Expressions -Operators ● Enter matrices in matlaB(矩阵) P Enter an explicit list of elements Y Separate the elements of a row with blanks or commas 2 Use a semicolon :i to indicate the end of each row Y Surround the entire list of elements with square brackets,[ 1 Load matrices from external data files Generate matrices using built-in functions P Create matrices with your own functions in M-files Array: a collection of data values organized into rows and columns Vector: an array with only one dimension Matrix: an array with two or more dimensions Size: specified by the number of rows and the number of columns in the arra ith the number of rows mentioned first >>[1234 567891: create an arrays with 9 elements >>[1,2,3;4,5,6;7,8,9]% a3×3 matrIx 6 >>[123 456 789MATLAB Lecture 1  School of Mathematical Sciences Xiamen University  http://gdjpkc.xmu.edu.cn  Lec1­2  0.0314 >> volume = area*0.5 % the volume of a cylinder with radius 0.1 and …  length 0.5 volume = 0.0157 >> (12+2*(7­4))/3^2 ans =  2 >> S = 1 – 1/2 + 1/3 –1/4 + 1/5 – 1/6  ...  + 1/7 – 1/8 S =  0.6345 >> z1 = 3 + 4i z1 = 3.0000 + 4.0000i >> z2 = 1 + 2 * i  >> z3 = 2*exp(i*pi/6)  >> z = z1*z2/z3 MATLAB → Getting  Started → Matrices  and Arrays  → Expressions  → Operators  l Enter matrices in MATLAB （矩阵） ÿ Enter an explicit list of elements. You only have to follow a few basic conventions: ² Separate the elements of a row with blanks or commas.  ² Use a semicolon ‘;‘ to indicate the end of each row. ² Surround the entire list of elements with square brackets, [ ].  ÿ Load matrices from external data files.  ÿ Generate matrices using built­in functions.  ÿ Create matrices with your own functions in M­files. Array: a collection of data values organized into rows and columns Vector: an array with only one dimension Matrix: an array with two or more dimensions Size: specified by the number of rows and the number of columns in the  array, with the number of rows mentioned first. >> [1 2 3 4 5 6 7 8 9]； % create an arrays with 9 elements >> [1,2,3;4,5,6;7,8,9] % create a 3×3 matrix  ans =  1  2  3  4  5  6  7  8  9 >> [1 2 3  4 5 6  7 8 9]