Write a script to round a variable x to 3 decimal places:
e.g. x = 2.3456 --> y = 2.346
Most nonzero elements in row
Sorted highest to lowest?
Find out total non zero element of matrix
Times 3 problem
Matlab Basics II - 3 Dimensional Arrays
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics II - Log and natural log
Replace every 3rd element in a vector with 4
Matlab Basics - Rounding III
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