Covering some basic topics I haven't seen elsewhere on Cody.
Given an input vector, output true or false whether it is a column vector.
The if statement did not work for x =1.
Their is a function for this already.
I guess this exercise is about learning that this function exists.
Change the sign of even index entries of the reversed vector
matrix of natural number
convert matrix to single column
03 - Matrix Variables 5
Back to basics 15 - Benchmark
Back to basics 4 - Search Path
Back to basics 23 - Triangular matrix
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