LESSON 2.2 OCTAVE TUTORIAL (MATLAB): ROW VECTORS, ARRAYS, ADDITION OF VECTORS MATRIX 

LESSON 2.2 OCTAVE TUTORIAL (MATLAB): ROW VECTORS, ARRAYS, ADDITION OF VECTORS MATRIX
• Creating Row vectors use spacing ( ) or commas (,). Assign an alphabet to the row vector
K = [ 5 5 5]
L = [5,5,5]
• Creating Column vectors use semicolon (;) or transpose sign (‘). Assign an alphabet to the row vector
M = [5;5;5]
N = [5 5 5]’
• The colon notation is used in the definition of multirow matrices
R = [1:5]
S = [10:-2:4] % Start from 10 to end at 4 but the spacing of -2
• Display function
Disp (M)
M
To multiply element by element. To perform element-wise multiplication, (.*)is used. to perform element-wise addition, we would use (.+), subtraction( .-) and division (./). Remember that element-by-element operations can only be carried out on matrices of the same dimensions.
.+ .- .* ./ .^
• Scalar
2*M
2.*M
• Addition of the two vectors
M+N ………………%No error detected it only matters / is different for multiplication and division
M.+N
• Exponent vector / Power function
M^2 ……………. % error function = error: for x^y, only square matrix arguments are permitted and one argument must be scalar. Use .^ for elementwise power.
M.^2
• Multiplication of Vectors
M*N ……………. % error function = nonconformant arguments (op1 is 3x1, op2 is 3x1)
M.*N
M.*N’
• Division of Vectors
M/N ……………. % error function
M./N
M./N’
• Creating Matrix. 2x3 matrix. Use the row rule and the column rule mentioned above.
O = [ 2 2 1; -3 1 2] clc
• Creating Matrix. 3x3 matrix. Use the row rule and the column rule mentioned above.
P = [ 2 2 1; -3 1 2; 9 8 7]
• Matrix is broad and will be discussed in lesson 2.3
• Clear
• Clear all
• clc
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