Write a function that returns that number of rows in a vector or matrix x
x = [1; 2; 3]
output = 3
Energy of a photon
Get the length of a given vector
Help the Patriots get to the Super Bowl
Matlab Basics - Convert a row vector to a column vector
Matlab Basics II - Max & Index of Max
Matlab Basics II - Unit Conversion
Matlab Basics II - Determine if an array has a 3rd dimension
Matlab Basics II - Free Fall
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