Write a function that returns that number of rows in a vector or matrix x
x = [1; 2; 3]
output = 3
Colon operator of two vectors
07 - Common functions and indexing 4
Matlab Basics - Switching Assignments
Matlab Basics II - Intervals
Matlab Basics II - Operations and Matrix Dimensions
Matlab Basics - Pick out parts of a vector
Matlab Basics II - Determine if an array has a 3rd dimension
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