what's the "str2num" mean?
str2num means "convert string to number"; even more cryptic is the fact that "str2num 1:10" is equivalent to "str2num('1:10')" (Matlab allows you to omit the single quotes and parentheses when using functions that take character strings as arguments).
Remove the polynomials that have positive real elements of their roots.
Getting logical indexes
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
5 Prime Numbers
What is the next step in Conway's Life?
Summing Digits within Text
Sort a list of complex numbers based on far they are from the origin.
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