Write a script to round x DOWN to the next lowest integer:
e.g. x = 2.3 --> x = 2 also: x = 2.7 --> x = 2
Change the sign of even index entries of the reversed vector
y equals x divided by 2
BASICS - sum part of vector
Matlab Basics II - Intervals
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics - Create a row vector
Replace every 3rd element in a vector with 4
Matlab Basics II - 3 Dimensional Arrays
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