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Mathematical Operations with Arrays
Addition and Subtraction
• >>VectA = [8 5 4] ; VectB = [10 2 7]
• >>VectC = VectA + VectB
• VectC = 18 7 11
Elementby element Operations
Symbol  Description 
.*  Multiplication 
./  Right division 
.^  Exponentiation 
.\  Left division 
z = [1:2:15]
z = 1 3 5 7 9 11 13 15
Using Arrays in Matlab Build in Math
Using Arrays in Matlab Buildin Function
• ndims
• size
• diag
• length
• reshape
• sort
• max, min, mean, median
• ……
Binary Matrix Operations : Vector Multiplication
The dot product
Binary Matrix Operations : Matrix Division
The equations can write in a form
AX = B
Binary Matrix Operations: Matrix Multiplication (2)
Exercise 1
1. Using the element by element
operation and built in function sum to
compute :
Exercise 2
2. Solve the following system of four linear
equations :
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