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).
How to find the position of an element in a vector without using the find function
Find the hypotenuse
Swap the first and last columns
Counting in Finnish
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